Issue connecting buttons and event

[MaelkMaelk]

Hello,
I have a button that is stored as an attribute in a class.
I go through every iteration via a for loop to check if they're pressed, but the events never match.
When I try to print both object I end up with :
<UIButton GUISprite(in 1 groups)>
<UIButton GUISprite(in 0 groups)>

What do the groups represent ?
Sorry if this is obvious but I'm a bit lost.

[MaelkMaelk]

The issue was that I was recreating and deleting buttons over and over again, instead of moving them.
I dont really know why it didnt work but I fixed it buy using the rebuild() button method.