Footstep sound on different material

Blitz3D Forums/Blitz3D Programming/Footstep sound on different material

In fact, my level is one mesh called "LEVEL.B3D" which contains differents entities (ground, wall, roof, etc..). My problem is that when I used the function Linepick to know what is the entities under the feet of the player, blitz return the global mesh (i.e "LEVEL").
So I'd like to know, if I must do a FindChildren() of my global level mesh or does it's possible (with B3D pipeline extension or in blitzcode) To have acces of all the entities which are pickable.

I hope that you understand what I said, my english wasn't perfect!!!