In reply to dave_59:
Ok, let me try,
There is a module C.
module C has multiple instances of module A, named A1_inst,A2_inst,A3_inst.
module A has instance of module B .
There is a bind file for module A , A_bind.
and a corresponding bind file for module B - B_bind .
So, I want different instances of B_bind for each instance of A_bind,as shown in my question