[GaGlets(R)]

Dont add `;` at the end

pawn Код:

COMMAND:testcmd(playerid, params[])
{
    SendClientMessage(playerid, 0x375FFFFF, "test test test win win win");
    return 1;
}

And ofcourse if you are using zcmd in the same scrit where are OnPlayerCommandText callback then OnPlayerCommandText callback will not work.