Hey,
because of your question, I was looking at http://www.appgamekit.com/documentation/Reference/Sprite/GetSpriteCollision.htm and there it says "This command is primarily for sprites that are not using physics" and at the end "This function only operates on the sprite's base shape. Any additional shapes added to physics sprites will not be used in this function, use GetPhysicsCollision instead."
So I believe since you are using physics, probably you have to use the GetPhysicsCollision instead.
I'm actually doing something similar and I'm not using collision. Can you share you've done setting up the physics ? Maybe we leverage our knowledge (or lack of if
) about this matter.
Regards!
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Paulo
http://www.mobilecreators.com