Sorry now I’m a little confused.
What I have done from scratch might give you an idea where Im most likely going wrong.
In screen4 I have made a button that says Servo On / Servo Off, I have ticked in its properties use VB script. Now I go into mach and open VB button editor and open that button, In the editor, line one reads ActivateSignal(output1) line two reads deActivateSignal(output1). but it just doesn’t work.
Made two buttons one for off and one for on, that works but its painful, screen4 is the worst program I think I have ever used, You set it up then open mach and things are not where they should be takes hours going back and forth to get things in the correct position.
Thanks for the replies