Stored Procedure Call Problem

I'm having all sorts of problems getting an informix 5.01 stored procedure to execute properly from PowerBuilder 4.01. The procedure works fine when I execute it from dbaccess (informix query tool on the back end). I narrowed the problem down to the SYSTEM call. Here's a simple stored procedure I wrote that will not execute properly when called from PowerBuilder: CREATE PROCEDURE reserve_child() SYSTEM "echo hello > /tmp/hello.txt";END PROCEDURE When I execute the procedure from the backend it works fine. Permissions on the procedure are wide open. To convince myself of this, I defined some returning values and put a simple select in the procedure after the SYSTEM call. When I run from PB, it skips over the SYSTEM call and executes the select and returns values properly to PB. The procedure is definitely firing, but the SYSTEM call being skipped over. My environment is as follows: PC: Windows 3.11, Power Builder Enterprise 4.01 (baseline version) Informix Net 5.01 for PC, Beame & Whiteside TCP-Connect stack UNIX: Unisys U6000/75, Dynix/Ptx 1.3.1 (sys 5.3 kernel), Informix 5.01 Any ideas? Thanks in advance, - dave kaneshiro dkaneshi@mary.wvus.org (work) dkaneshi@msn.com (home)