ST-Link_CLI.exe always returns exitcode 0

Hi,
i'm trying to program an ST32 controller using ST-Link/V2 and 
ST-Link_CLI.exe, which I start from a batchfile.
I need to recognize an error of ST-Link_CLI.exe in the batchfile, but it 
seems, that ST-Link_CLI.exe always returns exitcode=0, no matter if the 
command was succesful or not.

Is there anybody who experienced the same problem, or is there any other 
way, to reconize an error of the exe startet from a batchfile?

thx for your answers.