CMD: is a useful function known as ZCMD. ZCMD is currently the fastest and most efficient command processor. All the information you need can be found here: https://sampforum.blast.hk/showthread.php?tid=91354
It's ZCMD. download the include from the forum,
Go to the top of your script and #include <zcmd>
Then go at the bottom of the script and add the CMD: or COMMAND: