Integer reset on HUD causes game crash

Hello, I have built a combo counter that counts up on the HUD when every time you hit an enemy. It is put on a retriggerable delay to restart the combo after 2 seconds. It works when I use a print string, but when I tell it to go to the HUD it crashes. The weird thing is that it can count to 1 just fine and then reset itself. Anything 2 and above will cause it to crash when the retriggerable delay occurs. Help on this would be much appreciated.