Rama's Key system 4.12 problem

Hello, i’m here to find help about the rama’s key system on Unreal 4.12

The thing is when i click on the button, it don’t work anymore.

Did someone have succefuly achieved to make it work on this version of ue ?


So to ue4.10 -> ue 4.12 here’s the follow (from initial project)

Main_By_Rama : On key down :

Element_By_Rama : Event graph :