Problem about sequence array

Hi all,

I met one problem when i use the sequence array. The frame of the sequence:

v_seq

      |-----cfg_seq[]

      |-----slv_seq[]

v_sqr

      |-----cfg_sqr[]

      |-----slv_sqr[]

env

      |-----sub_env[]

                    |----cfg_agt

                    |            |----cfg_sqr

                    |            |----cfg_dri

                    |----slv_agt

                                 |----slv_sqr

                                 |----slv_dri

Connect the sqrs

foreach (sub_env[i]) begin
   v_sqr.cfg_sqr[i] = sub_env[i].cfg_agt.cfg_sqr;
   v_sqr.slv_sqr[i] = sub_env[i].slv_agt.slv_sqr;
end

the size of the sequence array is more than 1, when i run the v_seq, I found that only cfg_seq[0] and slv_seq[0] could generate the specified item with right constraints in macro `uvm_do_with.  Did anybody encounter the same problem and how did you solve it?

Thanks in advance.

mrforever