Need some help with this blueprint

Hello. I’m currently learning the blueprints section of UE4, and of course i got stuck. BAD
I started the Ball Puzzle Tutorial by Zak Parrish.
I followed closely, the only difference is that i have 32 buttons in mine.

Now for the issue. I used a ConvertMouseLocationToWorldSpace to get my click position by it seems to not work. Every time i click i returns 0. The weird thing is that if i click and right click at the same time it works fine. But then the click is stuck at the position i did the two clicks.
I also tried a DeprojectScreenToWorld, and that is stuck also.
The rotation works perfect.

Any ideas?