Countdown when player runs out of ammo

I’ve followed three different tutorials–one to add a flashlight and battery level, and two others to add a countdown in the game. I want to have the countdown start once the player’s battery runs out. I thought I could grab the Player Battery, check to see if it’s less than or equal to 0, and then start the countdown, but it’s giving me an error and I’m not sure how to fix it. I currently have this set up in the FirstPersonCharacterGameMode, as the tutorial showed. Should I be putting it somewhere else? Or how else could I get this to work?

Thanks for all help! I’m really new to Unreal so this might be a really rookie mistake!

The problem is that you are not connecting the execution line to the Cast To FirstPersonCharacter node

I told you it would be a rookie mistake… thank you so much!