Rpg Maker Developers Group

Hi guys
I'm trying to make a game where you're being a waiter, so I was trying to make it so that there are different customers,
and my brother helped me make it so there are three different icons, and it picks randomly :3
Then came the problem, whenever you talk to them and what they say isn't pre set (like the variable below, where it's random from 1 to 3)
instead of using the icon from the variable at the top of the coding, it uses the Event's Graphic, which I haven't set, so the person just vanishes for a few seconds :/
I know there must be some way to fix it, and it's probably really obvious, but I'm new to eventing, so I thought I better ask for help XD
Also, my brother said to put up the other event that's linked to it, 'cause it might help