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[asghdrew]

What am I doing wrong ?

You lack understanding on how callbacks work and how to define them (though i'm inclined to say the same for functions in general). A callback is a function to be called when specific interactions or events occur. Each type of callback has their own syntax. You did not follow the required syntax for the callback, so the engine does not call the callback when the interaction occurs.

Right .
So im totally lost right now...
I don't know what commands do I need ?