Hi! Someone could help me in how I call a FC in a FB(SCL source)? i'm using step7 

By its name. Additionally, if it returns a value an assignment to some variable is needed.

And RTFM. 

myFunctNoReturnNoParameters();

someVarOfReturnType:=myFunctWithReturn();

myFunctNoReturnWithParameters(someInput:=someVar);

someVarOfReturnType:=myFunctWithReturnWithParameters(someInput:=someVar);

Hi, in the post hdhosseini's is everything perfect explained

Calling Functions in SCL

If this post help you then will give a thanks or a rate hdhosseini  not me

Another thx hdfosseini..

Best regards zzVss.