[DaRk_RaiN]

That's because you need to SetTimerEx

pawn Code:

public OnPlayerEnterCheckpoint(playerid)
{

    if(gTeam[playerid] == TEAM_RED) {
    bomb = SetTimerEx("bomb2",10000,0,"i",playerid);
    SendClientMessageToAll(0xDEEE20FF, "The bomb is being planted, it will take 10 seconds to activate it");


    }

    else if(gTeam[playerid] == TEAM_BLUE) {
        GameTextForPlayer(playerid,
           "Don't let the terrorists plant a bomb here",
           6000,5);
    }

    return 1;
}

public bomb2(playerid)
{
        SendClientMessageToAll(0xDEEE20FF, "The bomb has been planted, you have 10 seconds to run away");
        CreateObject(1654,2636.1999512,-2094.5000000,12.6000004,272.8234863,314.9780273,134.0114746); //object(dynamite) (1)
        CreateObject(1654,2636.1999512,-2095.1000977,12.6000004,272.8234863,314.9780273,17.2614746); //object(dynamite) (2)
        CreateObject(1654,2636.3000488,-2094.8000488,12.6000004,272.8234863,314.9780273,285.0114746); //object(dynamite) (3)
        DisablePlayerCheckpoint(playerid);
        //If these three timers also affect a specific player, change them to SetTimerEx, same method.
        SetTimer("exp",10000,false);
        SetTimer("exp2",12000,false);
        SetTimer("exp3",15000,false);

}