Mobile controls question.

Hey all,
My second time posting a question on here and very new at Unreal 5. I used to use another 3d program so i have a limited understanding of the blueprints but learning slowly.

Ive been watching hours and hours of tutorials and have started creating a game.
Im wanting to create my game for mobile, well android.
My Question:
I have a bookcase and ive added a certain book to open this bookcase as a hidden door.
For pc controls it works perfectly but,
I cant work out how i can use “E” to interact for mobile?
Is it a simple as removing button press “E” and changing it to “Ontouch”?

If anyone could help then it would be greatly appreciated.
Thanks