Submit reports in a remote function module

Hi friends,

Below is the sample code i wrote (on R/3 4.6C),

==============================================

SUBMIT ztest001 WITH p_noprt EQ 'X'

WITH p_datum EQ i_datum

WITH s_matnr IN rtab1

WITH s_prodh IN rtab2

WITH s_kunnr IN rtab3

AND RETURN.

==============================================

There are something wrong with the 'IN' statement, i can't use more than 1 selection criterion, or the results from report(ztest001) were incorrect.

Everything is fine with only 1 selection, or in a report context... Isn't it a bug?