How can HitTestObject can trigger around the Object and not the rectangle of selection of the object ?

Hi !

I am doing a little mini-game but i have a problem with HitTestObject and his hitbox

Look at those images :

Here HitTestOject == 1 but it should be i want HitTestOject to react like this :

This is weird because for me the wall is well cropped, because if i select a space near the rectangle it doesn't trigger it.

Thanks !