[Threshold]

pawn Код:

COMMAND:object(playerid, params[])
{
    if(!APlayerData[playerid][LoggedIn]) return SendClientMessage(playerid, -1, "You must be logged in to use this command.");
    if(APlayerData[playerid][PlayerLevel] < 5) return SendClientMessage(playerid, -1, "Only Level 5+ Administrators can use this command.");
    new ObjectModel;
    if(sscanf(params, "i", ObjectModel)) return SendClientMessage(playerid, 0xFF0000AA, "Usage: \"/object <ObjectModel>\"");
    new Float:ploc[4];
    GetPlayerPos(playerid, ploc[0], ploc[1], ploc[2]);
    GetPlayerFacingAngle(playerid, ploc[3]);
    new fstr[95];
    format(fstr, sizeof(fstr), "You spawned object-id %i (model-id = %i) at coords: x=%.2f, y=%.2f, z=%.2f",
        CreateObject(ObjectModel, ploc[0], ploc[1], ploc[2], 0.0, 0.0, ploc[3]), ObjectModel, ploc[0], ploc[1], ploc[2]);
    SendClientMessage(playerid, 0x00FF00FF, fstr);
    return 1;
}

You need to send the client a message using SendClientMessage rather than returning 0. This way, you can let the player know what they need to change in order to use the command.