[ryansheilds]

pawn Код:

COMMAND:setint(playerid, params[])
{
    new id;
    new interior;
    if(PlayerInfo[playerid][AdminLevel] >= 1)
    {
        if(!sscanf(params, "ui", id, interior))
        {
            if(IsPlayerConnected(id))
            {
                if(interior <= 100)
                {
                    new string[64];
                    new name[MAX_PLAYER_NAME], PName[MAX_PLAYER_NAME];
                    GetPlayerName(playerid, name, sizeof(name));
                    GetPlayerName(id, PName, sizeof(PName));
                    format(string, sizeof(string), "Your Interior Has Been Setted To %d By %s.", interior, name);
                    SendClientMessage(id, 0xD8D8D8FF, string);
                    format(string, sizeof(string), "You Setted %s Interior To %d.", PName, interior);
                    SendClientMessage(playerid, 0xD8D8D8FF, string);
                    SetPlayerInterior(id, interior);
                    return 1;
                }
                else return SendClientMessage(playerid, 0xD8D8D8FF, "Invalid Interior Id");
            }
            else return SendClientMessage(playerid, 0xD8D8D8FF, "Player is not connected.");
        }
        else return SendClientMessage(playerid, 0xD8D8D8FF, "USAGE: /setint [PlayerId/PartOfName] [Interior]");
    }
    else return SendClientMessage(playerid, 0xD8D8D8FF, "You are not allowed to use this command.");
}

You can't check if the players connected at the initial start of the code when you never even input the value of ID. Use sscanf first then check if the players connected, so the ID is actually issued rather than being zero.