Habs ja auch schon gelöst, ABER mein problem ist noch das ich 
wenn ich /uclight oder /sirene eingib das vertauscht wird.
( /uclight = Sie haben die SIRENE angebracht /// /sirene = Sie haben das Undercover lblvalb la angebracht ... ) 
Was da los ?
Sirene
if(strcmp(cmd, "/sirene", true))
	{
	    if(IsPlayerConnected(playerid))
	    {
			if(IsACop(playerid))
			{
	  			new tmpcar = GetPlayerVehicleID(playerid);
	  			if(GetVehicleModel(tmpcar) == 411)
				{
					if(SIE1[GetPlayerVehicleID(playerid)] == 0)//infernus
		        	{
	        			sirene1[GetPlayerVehicleID(playerid)] = CreateObject(19419,0,0,-1000,0,0,0,100);
	       				AttachObjectToVehicle(sirene1[GetPlayerVehicleID(playerid)], GetPlayerVehicleID(playerid), 0.000000,-0.075000,0.674999,0.000000,0.000000,0.000000);
	       				SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene angebracht (zum Entfernen erneut: /sirene)");
	               		SIE1[GetPlayerVehicleID(playerid)] = 1;
	               		return 1;
		   			}
	       			else if(SIE1[GetPlayerVehicleID(playerid)] == 1)
		  			{
	       				DestroyObject(sirene1[GetPlayerVehicleID(playerid)]);
	       				SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene abgenommen.");
	               		SIE1[GetPlayerVehicleID(playerid)] = 0;
	               		return 1;
	   				}
		   		}
				else if(GetVehicleModel(tmpcar) == 560)//sultan
				{
				    if(SIE2[GetPlayerVehicleID(playerid)] == 0)
		        	{
	        			sirene2[GetPlayerVehicleID(playerid)] = CreateObject(19419,0,0,-1000,0,0,0,100);
	       				//AttachObjectToVehicle(sirene[GetPlayerVehicleID(playerid)], GetPlayerVehicleID(playerid), 0.000000,-0.075000,0.674999,0.000000,0.000000,0.000000);
	       				AttachObjectToVehicle(sirene2[GetPlayerVehicleID(playerid)], GetPlayerVehicleID(playerid), 0.000000, 0.000000, 0.834999, 0.000000, 0.000000, 0.000000); //Object Model: 19419 | Fette Sirene Sultan
	       				SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene angebracht (zum Entfernen erneut: /sirene)");
	               		SIE2[GetPlayerVehicleID(playerid)] = 1;
	               		return 1;
		   			}
	       			else if(SIE2[GetPlayerVehicleID(playerid)] == 1)
		  			{
	       				DestroyObject(sirene2[GetPlayerVehicleID(playerid)]);
	       				SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene abgenommen.");
	               		SIE2[GetPlayerVehicleID(playerid)] = 0;
	               		return 1;
	   				}
				}
		   		return 1;
	   		}
	   		else
	   		{
	   		    SendClientMessage(playerid,COLOR_GREY,"Du bist kein Polizist.");
	   		    return 1;
			}
		}
		return 1;
   	}
Uclight
	if(strcmp(cmd, "/uclight", true))
	{
	    if(IsPlayerConnected(playerid))
	    {
			if(IsACop(playerid))
			{
			    new tmpcar = GetPlayerVehicleID(playerid);
	  			if(GetVehicleModel(tmpcar) == 411)
	  			{
    				if(UCL1[GetPlayerVehicleID(playerid)] == 0)
	        		{
        				uclight1[GetPlayerVehicleID(playerid)] = CreateObject(18646,0,0,-1000,0,0,0,100);
       					AttachObjectToVehicle(uclight1[GetPlayerVehicleID(playerid)], GetPlayerVehicleID(playerid), 0.000000,-0.075000,0.674999,0.000000,0.000000,0.000000);
       					SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene angebracht (zum Entfernen erneut: /uclight)");
               			UCL1[GetPlayerVehicleID(playerid)] = 1;
               			return 1;
	   				}
       				else if(UCL1[GetPlayerVehicleID(playerid)] == 1)
	  				{
       					DestroyObject(uclight1[GetPlayerVehicleID(playerid)]);
       					SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene abgenommen.");
               			UCL1[GetPlayerVehicleID(playerid)] = 0;
               			return 1;
   					}
                }
				else if(GetVehicleModel(tmpcar) == 560)//sultan
				{
					if(UCL2[GetPlayerVehicleID(playerid)] == 0)
	        		{
        				uclight2[GetPlayerVehicleID(playerid)] = CreateObject(18646,0,0,-1000,0,0,0,100);
       					//AttachObjectToVehicle(uclight2[GetPlayerVehicleID(playerid)], GetPlayerVehicleID(playerid), 0.000000,-0.075000,0.674999,0.000000,0.000000,0.000000);
       					AttachObjectToVehicle(uclight2[GetPlayerVehicleID(playerid)], GetPlayerVehicleID(playerid), -0.544999, 0.000000, 0.869999, 0.000000, 0.000000, 0.000000); //Object Model: 18646 |  Ucl ight Sultan
       					SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene angebracht (zum Entfernen erneut: /uclight)");
               			UCL2[GetPlayerVehicleID(playerid)] = 1;
               			return 1;
	   				}
       				else if(UCL2[GetPlayerVehicleID(playerid)] == 1)
	  				{
       					DestroyObject(uclight2[GetPlayerVehicleID(playerid)]);
       					SendClientMessage(playerid,COLOR_LIGHTBLUE,"Sie haben die Sirene abgenommen.");
               			UCL2[GetPlayerVehicleID(playerid)] = 0;
               			return 1;
   					}
				}
				return 1;
   			}
   			else
   			{
	   	 		SendClientMessage(playerid,COLOR_GREY,"Du bist kein Polizist.");
				return 1;
			}
		}
		return 1;
	}
Hat sich JETZT endlich erledigt 
 
if(strcmp(cmd, "/uclight", true))    Das ist falsch 
if(strcmp(cmd, "/uclight", true) == 0)   Das ist richtig !!! <----------
Somit hat sich das erledigt