Prop or overlay HELP!

I’m writing a story and I’M currently having issues with PROP USE or OVERLAY. You see, I want that three of my characters look like they are playing in a rock band. I’m using the command @add PROP NAME to character, but is not working, i’m trying to use some overlays someone made for me and the script gives me an error code, that the prop doesn’t exist, even tho episode tean ALREADY PPROVED THE OVERLAYS. PLEASE HELP.

You can’t use overlays as props. Here’s a guide for overlays: DARA’S GUIDE: Overlays

Thank you!!!