whats with RGBAt? Its giving me 0, 0, 0 when used with RGBRed/RGBBlue etc

[PotatoMerchantz5]

im trying to manipulate actions by testing overlapped with a field or position which is a specific RGB value, the problem is RGBAt when used on an actives position ( a square with color) returns 0, 0, 0.
I must not be using it right, can someone point me to an example for proper use of RGBAt?

object RGBAt(object.X, object.Y) //Returns 0, not even sure what it would return since the docs dont show me anything on it

set alt value redColor = RGBRed(RGBAt(object.X, object.Y)) // returns 0???? what?

pls someone help me understand this.

[schrodinger]

RGBat requires "relative" coordinates to the top-left origin of the object

so you can basically do:
RGBat(desiredX - Xleft Object, desiredY - Ytop Object)

[PotatoMerchantz5]

thanx alot, i thought it was using world space coordinates