[Konstantinos]

That strcmp and not YCMD. Also there are so many tutorials about how to write a command in ZCMD, you should search next time.

PHP код:

CMD:fly(playerid, params[])
{
    StartFly(playerid);
    return 1;
}

CMD:stopfly(playerid, params[])
{
    StopFly(playerid);
    return 1;
}