How do I prevent Accessories from resizing?

So I made a mesh in blender and scaled it to fit a character's head. After making it an accessory, I put it inside the character and I noticed that it changed size. I don't know anyway to go around this. I've heard about AutomaticScalingEnabled, but the thing is it doesn't seem to work. Please help me. I don't know if there is a certain code to prevent this or anything.