Need help with position variable

Hello, I activated $M_POS_ENB

But if i write this : GO[1]=($SCR_GRP[1].$MCH_POS_X*10) I get an error : parameter not found !

Does anyone knowwhat is wrong ?

I am ashamed, i took the line of code from HERE thinking that the syntax was fine but the multiplication at the end was not !

Weird, for me the error was gone when i deleted the *10.

Turns out what i needed was the angles.

Here is what i used: