[Nero_3D]

You use a custom client message function, dont you ?

pawn Код:

stock ClientMesage(playerid, color, text[]) {
    print(text); // check if it was called an SCM is bugged (although I dont belive that)
    SendClientMessage(playerid, color, text);
    TextDrawSetString(textdrawid, text);
}

SendClientMessage is directly called
The only possiblitly left is that the function ClientMessage wasnt called at all

Therefore you can only search for all ClientMessage and test the function / command in game