Editor: Set fuel in tanks
 

I'm in the gem editor, and setting up a game, and I add a flamer guy. His (balloon) tank is empty.
Sometimes it's not but copying and pasting him, it's always empty when the game starts.

How can I fill it before the game starts. I know how to refuel it in game.

If I add a fuel barrel from inventory to a truck with W-7, the barrel of fuel is empty.
How can I fuel it before I add it? I know I found the answer years ago, but I can't remember.

Edit: I've done some testing this morning and if you ADD a flamer, his tank is full. Then if you copy him to a new guy, the new guy's tank is empty.
Also adding a GMC truck with a Jerry can, the Jerry can is empty.


Thanks for any and all help.