I cannot use "same as" assignment

Hello,all

I have made a symmetry bumper model on HyperMesh, so I want to make its property and material same as each other.

However, once I assigned as so, its not applied.

I use HyperMesh -RADIOSS Block12 format now.

could you give me an advice? /emoticons/default_smile.png' alt=':)' srcset='/emoticons/smile@2x.png 2x' width='20' height='20'>