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Button on widget pressed to have action on Level Blueprint

Hi all,
I have seen a similar question here but not quite like this.
I have some buttons on my widget and I have my game logic in my Level Blueprint. In development I used A and D keys for certain actions, now I need to muster my buttons for them.
I want the following: a button is pressed on my widget, anothers is clicked same on my widget. I want them to influence my Level Blueprint.
Also, the game is for pc atm, but will set the project to mobile. These UI buttons, do they adapt by themselves or will I have to do something differently?
Thanks in advance.