Using SyssCommand node with AS400

I am trying to use a SysCommand node to run AS400 commands, but it is not working.  Any advise would be apppreciated. I am using option: run program directly (no shell options) with the command: DSPUSRPRF USRPRF(*ALL) OUTPUT(*OUTFILE) OUTFILE(SECPRF/USRPRFOUT) and I am receiving;

Executing System Command Activity SysCommand2860.....

Full system command: DSPUSRPRF USRPRF(*ALL) OUTPUT(*OUTFILE) OUTFILE(SECPRF/USRPRFOUT)

Error while executing System Command activity.

java.io.IOException: Cannot run program "DSPUSRPRF": DSPUSRPRF

Terminating process ...

I am wondering if the SysCommand cannot run an AS400 command, but maybe I will need to create a CL with the commands and run the program?