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Hello.

Always when you type "/accept die" DieTimer will have the value 0 because you create this variable there.
So you should do it like this:

PHP код:

if(strcmp(params, "die", true) == 0) {
    static DieTimer[MAX_PLAYERS];
    if(gettime() < DieTimer[playerid])
    {
        format(string, sizeof(string), "Ban phai doi %d giay moi co the chet.", DieTimer[playerid]-gettime());
        SendClientMessageEx(playerid, COLOR_GREY, string);
        return 1;
    }
    DieTimer[playerid] = gettime()+30;
    if(GetPVarInt(playerid, "Injured") == 1) {
        SendClientMessageEx(playerid, COLOR_WHITE, "You A Dead.");
        KillEMSQueue(playerid);
        ResetPlayerWeaponsEx(playerid);
        SpawnPlayer(playerid);
    }
    else { SendClientMessageEx(playerid, COLOR_GREY, " u cannot do that right now!"); }
} 


Try this. I think static will help you.