First thing I’d do is wire up some print strings inside of your FPSGameMode and make sure your bools are what you expect them to be.
Another Idea would be to replace tick with a “Check Color” input temporarily to give yourself some more control.
Taking a step back though: Instead of having 4 of the same BP, I’d try and create 1 BP (or one parent) With the functionality. - Make the Mesh editable, and define color in an Enum (check out the “Switch” node for enums)
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