S7 out node invalid -endpoint properties

[tiscali19]

Hi,
i have upgraded Node Red from v.0.19.5 to v.3.0.2. When I use S7 out for switch on/off light all is ok, but when I use it for motorized roller, Node Red show alert for invalid -endpoint properties (the error starts when i Add the second PLC with M1 etc. variables).
The command for up/down roller is sent but the PCL accept it only once and not stop the roller when I send the same command.
The old version (running on Siemens IOT2000 works fine.
The new version run on Raspberry.
Thanks in advance.

P.S. The problem is similar to #120