Count amount of profiles in Read Audience

Hello,

I'm seeking assistance with tracking the number of profiles in a specific segment during a journey. Specifically, I need to identify if a segment includes more than five profiles, and if so, the journey should continue. While I'm considering monitoring this similarly to creating an Audience, I'm open to alternative methods or solutions for achieving the same result. Could anyone provide guidance or suggestions on how to implement this?

I've tried somethingl like this in journey advanced editor: distinctCount([inSegment("[CXW] AEP IIN")]) > 5 but nothing happens (as my segment has more than 5 profiles)

Thank you!