[JaTochNietDan]

Well, the unknown command message is shown when the OnPlayerCommandText callback returns 0, so do you return 0 anywhere in your OnPlayerCommandText function? Also, in ZCMD do you return a value at the end of each command to prevent the script from continuing to the end of the OnPlayerCommandText callback?

I'm not really sure how ZCMD works as I've never used it, but I assume that's where the issues lies, you should probably check out the documentation for it, if there is any.