ConvertWorldLocationToScreenLocation returning 0 values on second player?

Heya, hopefully this is a simple one and I’m just missing something…

I’m just trying to work out when a player leaves the screen space, so is ‘out of view’ of the camera. I set it up with player one no problem, but when I tried adding the other players (up to four) I found it was only seeing them as out of view. The bool in the node always returns true, but the screen position x and y return at 0.0, and after a few hours of sifting through possible reasons I’m at a bit of a loss, though my suspicion lies with the player controller. Can anyone shed some new light on this for me?

So almost immediately after posting this I found my problem, go figure. Had to set all the player control indexes to 0.