[Kwarde]

pawn Код:

if(!strcmp(cmdtext, "/impound", true))
{
    new engine, lights, alarm, doors, bonnet, boot, objective;
    if(!IsACop(playerid)) return SendClientMessage(playerid, COLOR_WHITE, "You must be an cop!");
    if(!strlen(cmdtext[9])) return SendClientMessage(playerid, COLOR_WHITE, "USAGE: /inmpound [playerid]");
    if(!IsPlayerConnected(strval(cmdtext[9]))) return SendClientMessage(playerid, COLOR_WHITE, "That player is not connected or an invalid player ID!");
    if(!IsPlayerInAnyVehicle(strval(cmdtext[9]))) return SendClientMessage(playerid, COLOR_WHITE, "The player isn't in any vehicle!");
    Impounded[GetPlayerVehicleID(strval(cmdtext[9])) = 1;
    GetVehicleParamsEx(GetPlayerVehicleID(strval(cmdtext[9])), engine, lights, alarm, doors, bonnet, boot, objective);
    SetVehicleParamsEx(GetPlayerVehicleID(strval(cmdtext[9])), 0, lights, alarm, doors, bonnet, boot, objective);
    SendClientMessage(playerid, COLOR_WHITE, "Vehicle has been booted!");
    return 1;
}

Try that. And also, I reccomend you using ZCMD+SSCANF. It's ALOT faster and params are easier to use.
Making the commands is also easier