diff --git a/README.md b/README.md
index 16106c3..0c5039c 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,8 @@ At this moment the development environment is based on Visual Studio 2017.
  
 ## Environment variables
 Environment variables (example)
-QT5DIR64=c:\Qt\Qt5.12.6\5.12.6\msvc2017_64\
-QT5DIR64OSGEO=c:\OSGeo4W64\apps\Qt5
+QT5DIR_OSGEO=c:\OSGeo4W64\apps\Qt5
+BOOST_ROOT_DIR=c:\boost\boost_1_85_0\
 
 ## Link Libraries
 netCDF library:
diff --git a/dispatch_release_dll_to_qgis.bat b/dispatch_release_dll_to_qgis.bat
index fef3228..e15e890 100644
--- a/dispatch_release_dll_to_qgis.bat
+++ b/dispatch_release_dll_to_qgis.bat
@@ -6,8 +6,8 @@ copy .\doc\qgis_umesh_installation.pdf  "c:\Program Files\Deltares\qgis_umesh\do
 copy .\icons\*.*                        "c:\Program Files\Deltares\qgis_umesh\icons\*.*"
 
 rem copy to Bulletin
-copy "c:\OSGeo4W\apps\qgis\plugins\qgis_umesh.dll"      n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.34.00_qgis_umesh\*.*
-copy .\doc\qgis_umesh_um.pdf                            n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.34.00_qgis_umesh\doc\*.*
-copy .\doc\qgis_umesh_installation.pdf                  n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.34.00_qgis_umesh\doc\*.*
-copy .\icons\*.*                                        n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.34.00_qgis_umesh\icons\*.*
+copy "c:\OSGeo4W\apps\qgis\plugins\qgis_umesh.dll"      n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.40.01_qgis_umesh\*.*
+copy .\doc\qgis_umesh_um.pdf                            n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.40.01_qgis_umesh\doc\*.*
+copy .\doc\qgis_umesh_installation.pdf                  n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.40.01_qgis_umesh\doc\*.*
+copy .\icons\*.*                                        n:\Deltabox\Bulletin\mooiman\programs\QGIS_3.40.01_qgis_umesh\icons\*.*
 rem pause
diff --git a/lib/x64/debug/qgis_analysis.lib b/lib/x64/debug/qgis_analysis.lib
index f8dfb9f..3af163c 100644
Binary files a/lib/x64/debug/qgis_analysis.lib and b/lib/x64/debug/qgis_analysis.lib differ
diff --git a/lib/x64/debug/qgis_core.lib b/lib/x64/debug/qgis_core.lib
index 56c4724..c0c5ad3 100644
Binary files a/lib/x64/debug/qgis_core.lib and b/lib/x64/debug/qgis_core.lib differ
diff --git a/lib/x64/debug/qgis_gui.lib b/lib/x64/debug/qgis_gui.lib
index 9ed329d..a0ade69 100644
Binary files a/lib/x64/debug/qgis_gui.lib and b/lib/x64/debug/qgis_gui.lib differ
diff --git a/lib/x64/release/qgis_analysis.lib b/lib/x64/release/qgis_analysis.lib
index f8dfb9f..3af163c 100644
Binary files a/lib/x64/release/qgis_analysis.lib and b/lib/x64/release/qgis_analysis.lib differ
diff --git a/lib/x64/release/qgis_core.lib b/lib/x64/release/qgis_core.lib
index 56c4724..c0c5ad3 100644
Binary files a/lib/x64/release/qgis_core.lib and b/lib/x64/release/qgis_core.lib differ
diff --git a/lib/x64/release/qgis_gui.lib b/lib/x64/release/qgis_gui.lib
index 9ed329d..a0ade69 100644
Binary files a/lib/x64/release/qgis_gui.lib and b/lib/x64/release/qgis_gui.lib differ
diff --git a/packages/qgis_umesh.vcxproj b/packages/qgis_umesh.vcxproj
index be4b8d1..a246525 100644
--- a/packages/qgis_umesh.vcxproj
+++ b/packages/qgis_umesh.vcxproj
@@ -37,11 +37,11 @@
   </ItemGroup>
   <ItemGroup>
     <CustomBuild Include="include\qgis_umesh.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
     </CustomBuild>
   </ItemGroup>
@@ -51,12 +51,12 @@
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
     </CustomBuild>
     <CustomBuild Include="include\MyDrawingCanvas.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
@@ -65,8 +65,8 @@
     <ClInclude Include="include\AbstractCanvas.h" />
     <ClInclude Include="include\AbstractCanvasListener.h" />
     <CustomBuild Include="include\my_date_time_edit.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
@@ -77,28 +77,28 @@
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
     </CustomBuild>
     <CustomBuild Include="include\map_property_window.h">
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
     </CustomBuild>
     <CustomBuild Include="include\add_current_view_window.h">
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
     </CustomBuild>
     <CustomBuild Include="include\handle_vector_layers.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
@@ -113,8 +113,8 @@
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">generated\moc_%(Filename).cpp;%(Outputs)</Outputs>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
       <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Performing Custom Build Step: MOC%27ing %(FullPath)</Message>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR64OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(QT5DIR_OSGEO)\bin\moc.exe   %(FullPath)    -o generated\moc_%(Filename).cpp</Command>
     </CustomBuild>
     <ClInclude Include="include\perf_timer.h" />
     <ClInclude Include="include\qgis_umesh_version.h" />
@@ -134,13 +134,13 @@
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -182,7 +182,7 @@ call ..\scripts\git_insert_hash.cmd .\include qqis_umesh_version.rc</Command>
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <InlineFunctionExpansion>Default</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>.\include;c:\OSGeo4W\include\;c:\OSGeo4W\apps\qgis\include;$(QT5DIR64OSGEO)\include;$(QT5DIR64OSGEO)\include\ActiveQt\;$(QT5DIR64OSGEO)\include\Qt\;$(QT5DIR64OSGEO)\include\QtCore\;$(QT5DIR64OSGEO)\include\QtGui\;$(QT5DIR64OSGEO)\include\QtSvg\;$(QT5DIR64OSGEO)\include\QtWidgets\;$(QT5DIR64OSGEO)\include\QtXml\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>.\include;c:\OSGeo4W\include\;c:\OSGeo4W\apps\qgis\include;$(QT5DIR_OSGEO)\include;$(QT5DIR_OSGEO)\include\ActiveQt\;$(QT5DIR_OSGEO)\include\Qt\;$(QT5DIR_OSGEO)\include\QtCore\;$(QT5DIR_OSGEO)\include\QtGui\;$(QT5DIR_OSGEO)\include\QtSvg\;$(QT5DIR_OSGEO)\include\QtWidgets\;$(QT5DIR_OSGEO)\include\QtXml\;$(BOOST_ROOT_DIR);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN64;NDEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_WARNINGS;QT_DLL;QT_THREAD_SUPPORT;CORE_EXPORT=;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <FunctionLevelLinking>true</FunctionLevelLinking>
@@ -230,7 +230,7 @@ call ..\scripts\git_insert_hash.cmd .\include qqis_umesh_version.rc</Command>
     </Midl>
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>.\include;c:\OSGeo4W\include\google;c:\OSGeo4W\apps\qgis\include;$(QT5DIR64OSGEO)\include;$(QT5DIR64OSGEO)\include\ActiveQt\;$(QT5DIR64OSGEO)\include\Qt\;$(QT5DIR64OSGEO)\include\QtCore\;$(QT5DIR64OSGEO)\include\QtGui\;$(QT5DIR64OSGEO)\include\QtSvg\;$(QT5DIR64OSGEO)\include\QtWidgets\;$(QT5DIR64OSGEO)\include\QtXml\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>.\include;c:\OSGeo4W\include\;c:\OSGeo4W\apps\qgis\include;$(QT5DIR_OSGEO)\include;$(QT5DIR_OSGEO)\include\ActiveQt\;$(QT5DIR_OSGEO)\include\Qt\;$(QT5DIR_OSGEO)\include\QtCore\;$(QT5DIR_OSGEO)\include\QtGui\;$(QT5DIR_OSGEO)\include\QtSvg\;$(QT5DIR_OSGEO)\include\QtWidgets\;$(QT5DIR_OSGEO)\include\QtXml\;$(BOOST_ROOT_DIR);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN64;_DEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_WARNINGS;CORE_EXPORT=;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <AssemblerListingLocation>.\Debug/</AssemblerListingLocation>