I'm using Pega Robotics Studio 8.0.1096.0 and same Runtime version.
I have created Robotics solution with many procedure automations with exit string parameters.
When I run the solution it didn't retrieve the data to UI so I debug and found out procedure automations do not return expected value. They return NULL as you can see in "Procedure Return Null.png". But when I run same solution without any modification in friends machine with same version it runs as expected and procedure automation returns values as seen in "Procedure Return Value.jpg"
So there isn't a error in my automation but it with my installed studio and runtime environment.
I need to correct this error without reinstalling studio and runtime.
It was also observed that message manifest don't return values as well.