avalon MM generator read issue

so i found the issue.

data = u_avalon_MM_gen.mm_master_bfm_0.completed_read_response.data[0];

data2 = u_avalon_MM_gen.mm_master_bfm_0.return_response.data[0];

$display("Data=%0h Data2=%0h", data, data2);

data will show the correct  1020001 , but return_response.data is 0  seem like there are some delay between these two.  i'm using quartus 23.4 to generate IP for avalon MM BFM.