Help with button coordinates (Trace Line)

So I have two sort of buttons:

And I use this code:

With:

What coordinates would I need to put in the TraceLine.Entity == self and HitPosition.x <= 85 and HitPosition.x >= -80 and HitPosition.y >= -25 and HitPosition.y <= -35 part?

[editline]21st March 2016[/editline]

Help please. I can’t figure this out…

[editline]21st March 2016[/editline]

Please someone helpp.