Press 2 keys ( Solved )

I feel silly for asking what seems like a simple question, but I can not think of a solution.

I want to allow the player to fall thru a platform when the jump button and down is pressed.

Could someone push me to the right direction.

Ok - nevermind I solved my own question the moment I posted this.

Condition downarrow key is down, subevent the jump key is pressed.