Checking if an object is not seen by anyone

Hi there. Brand new to Unreal, and with a question to ask.

Got a blueprint script that checks if a character in the field of view of any other character. But it’s not working as intended. I’ve tried troubleshooting the issue a few times, and have given up. As suck, I ask for assistance.

I’ve included my blueprint thus far below.

Your equation only works for 2D environment, if that’s what you want then you have to change (TraceStart - TraceEnd) by (HitActorLocation - TraceStart)