Thank you for all you help Steve! It is working now, the following information also helped.
"By default, AI Perception only detects enemies (actors assigned to a different team). However, actors do not have a team by default. When an actor doesn’t have a team, AI Perception considers it neutral.
As of writing, there isn’t a method to assign teams using Blueprints. Instead, you can just tell AI Perpcetion to detect neutral actors. To do this, expand Detection by Affiliation and enable Detect Neutrals."