How to "disable" Key Pressed-Node

Hello Unreal Engine Community,

I’ve been working on a FPS-Game for some time now and I was wondering: Would there be a way to disable the Key Pressed-Node?
For example: I have a Fire function, if you press the key and keep it pressed, there is no way to turn the Fire-function off.
Anyone have some advice?

(Sorry for my bad english, I’m german)

Thank you, it worked!