That's handy didn't notice that. But what I mean is in regards to conditions, so that you can do "[variable] is down" condition.
So this way you could set custom controls (you can do something like this is almost every professional game), such as:
__
-Condition: Any key pressed.
-Action: set sprite variable to [key pressed]
__
-Condition: [variable] is down
-Action: do what ever