Anyone know hot to resolve this?(2d coordinates re

Blitz3D Forums/Blitz3D Beginners Area/Anyone know hot to resolve this?(2d coordinates re

Nope...the formula don't work....if i make this the mouse rest in screen coords...and the path also.
I give up......i try playing with screen offset (and the only command to do this in blitz is origin)but all change that i made give strange result...but none works.