Conditional Branch: If 'button' is being pressed?

I am trying to use this typing of conditional branch for my skit events in my game but none of the keys I set it to work but if I randomly bash n the keyboard it works.
For example:
I set the conditional branch to if 'Z' button is being pressed, I then test it and press the 'Z' key and nothing happens, I press every individual key on the keyboard and nothing happens, I randomly bash all of the keys and it works.

Has anyone else had this problem? This kinda makes it hard to do skit events in my game they way I want without scripting...

It refers to buttons (like on a controller), not necessarily to that key on the keyboard. Each button is assigned a key on the keyboard, however not all keys are available. By default, Button L is the 'Q' key. Button R is the 'W' key, etc... To see the current setup and to change it around, you can press F2 during test play.

Oh I see, thank you very much.

I've been messing around with that key imput thing for a good while tonight withought any luck.
Thanks for explaining that