How do I make a blinking system from SCP: Containment Breach

how do I make a blinking system from SCP: Containment Breach

here’s how the blinking system from SCP: Containment Breach looks like:

You can add a Post Process component to the Character BP, set a Timeline to change the Brightness/White Balance acordingly, and play the Timeline whenewer needed, based on a widget progress bar or otherwise.