[Rs]two test steps pick up the same row dataSource in thread

Thanks Giscard. it works but-
my test case includes two testSteps: one Soap xml Request, one groovy. When in load test (i.e., 4 run per Thrd, 100 thrds, Simple Strategy), soap request param did not picking up unique DataSource Row (groovy did). I checked records and found soap request param only pick up 370 row instead of 400 (4 runs x 100 thrd). Is there any feature to setting up this unique data picking up issue?
Thanks,
-Larry