diff --git a/AnnotationParser.php b/AnnotationParser.php
index 7d57874..69e0d63 100644
--- a/AnnotationParser.php
+++ b/AnnotationParser.php
@@ -108,6 +108,34 @@ public static function getListenersFromAnot($field_annotation, $field, $annotati
                     }
                 }
                 break;
+            case "@REPLACE":
+                $selectedFields = explode(",", $sourceField);
+                $badfield = false;
+                if (count($selectedFields) != 3) {
+                    $badfield = true;
+                    $warnings [] = 'REPLACE for '.$sourceField.' is badly formatted.';
+                } else {
+                    $field0 = trim($selectedFields[0]); // From
+                    $field1 = trim($selectedFields[1]); // What to replace
+                    $field2 = trim($selectedFields[2]); // replace with.
+                    if (!in_array($field0, $fieldNames)) {
+                        $warnings [] = 'For field: ' . $destinationField . ' ' . $field0 . ' is not a field.';
+                        $badfield  = true;
+                    }
+                    if (!in_array($field1, $fieldNames)) {
+                        $warnings [] = 'For field: ' . $destinationField . ' ' . $field1 . ' is not a field.';
+                        $badfield  = true;
+                    }
+                    if (!in_array($field2, $fieldNames)) {
+                        $warnings [] = 'For field: ' . $destinationField . ' ' . $field2 . ' is not a field.';
+                        $badfield  = true;
+                    }
+
+                }
+                if (!$badfield){
+                    @$listeners[$field0] .= '$("input[name=\'' . $destinationField . '\']").val($("input[name=\'' . $field0 . '\']").val().split($("input[name=\'' . $field1 . '\']").val()).join( $("input[name=\'' . $field2. '\']").val())).change();';
+                }
+                break;
             default:
                 break;
         }
diff --git a/StringUtils.php b/StringUtils.php
index 8dd7966..5d1e63d 100644
--- a/StringUtils.php
+++ b/StringUtils.php
@@ -9,7 +9,7 @@
 
 class StringUtils extends \ExternalModules\AbstractExternalModule {
 
-    const annotation = ["@TOLOWER", "@TOUPPER", "@SUBSTR", "@LTRIM", "@RTRIM", "@TRIM", "@STRLEN", "@INDEXOF", "@CONCAT", "@RIGHT", "@LEFT"];
+    const annotation = ["@TOLOWER", "@TOUPPER", "@SUBSTR", "@LTRIM", "@RTRIM", "@TRIM", "@STRLEN", "@INDEXOF", "@CONCAT", "@RIGHT", "@LEFT", "@REPLACE"];
 
 
     public function redcap_data_entry_form($project_id, $record, $instrument, $event_id, $group_id, $repeat_instance)
diff --git a/StringUtilsTest.php b/StringUtilsTest.php
index 6d3b03e..e4066d6 100644
--- a/StringUtilsTest.php
+++ b/StringUtilsTest.php
@@ -68,4 +68,8 @@
 assert(count($listeners) == 3);
 assert(array_key_exists("img_1", $listeners));
 assert(array_key_exists("url", $listeners));
-assert(array_key_exists("img_2", $listeners));
\ No newline at end of file
+assert(array_key_exists("img_2", $listeners));
+
+list($warnings, $listeners) = $stringUtils->getListenersFromAnot("@REPLACE=sourceField, searchvaluefield, newvaluefield", ["field_name" => "resultField"], "@REPLACE", [], [], ["resultField", "sourceField", "searchvaluefield", "newvaluefield"]);
+assert(count($warnings) == 0);
+assert(count($listeners) == 1);
\ No newline at end of file
diff --git a/howto.html b/howto.html
index 7d0bd1c..a03b8f3 100644
--- a/howto.html
+++ b/howto.html
@@ -125,6 +125,14 @@ <h1><span class="glyphicon glyphicon-info-sign"></span> How to use the StringUti
                                     Concatenates other <b>text</b> fields into one field. The fields must be valid field names. The list can contain any amount of fields.
                                 </td>
                             </tr>
+                            <tr>
+                                <td>
+                                    @REPLACE=sourceDataField, SearchTextField, ReplaceByTextField
+                                </td>
+                                <td>
+                                    Searches in the <b>sourceDataField</b> for a specified value defined in <b>SearchTextField</b> and returns a new string where <strong>all</strong> the specified values in <b>ReplaceByTextField</b> are replaced. All parameters are field names.The fields must be valid field names.
+                                </td>
+                            </tr>
                         </tbody>
                     </table>
                 </div>