Is varPlanRotationAngle a read-only variable?

[Tea]

Dear Developers,

 

is varPlanRotationAngle (from Selectors for GetProgramVariable and SetProgramVariable) a read-only variable?

 

For me this works ok:

double planRotation;
gSDK->GetProgramVariable(varPlanRotationAngle, &planRotation);

 

While this doesn't work:

double planRotation = 30.0;
bool res = gSDK->SetProgramVariable(varPlanRotationAngle, &planRotation); // returns False

 

 

Thanks for help,

Tea