Call System problem

[Pokna Mak <pokna@HK.SUPER.NET>]

I am using SQR3 Workbench.
I need to use the nested 'Call System Using' where the {command} is another
SQR program and {status} is the return status. Example is, SQR1 will use
'Call System Using {SQR2} {status}', and SQR2 will also has 'Call System
Using {SQR3} {status}'.
Under SCO Open Server (Enterprise) 3.0, there are no problems. But when we
upgrade the SCO to Open Server (Enterprise) 5.0, the SQR programs with this
format all fail with return status -1. We try to test and find that the
last program, SQR3 is executed will no problem and return 0, but SQR2
return -1. When we run the program again within a short while, everything
is all right and all return 0. But after some long time, like an hour, the
program will return -1 again.
Please notify me if you have any idea. Thank you very much.

Best regard

Pokna Mak