Instead of making him rewrite all his code because you don't understand PVars(Per-Player variable system), just use mine I posted below.
pawn Код:
CMD:destroyvehicleobjects(playerid, params[])
{
DestroyDynamicObject(GetPVarInt(playerid, danodano1));
DestroyDynamicObject(GetPVarInt(playerid, danodano));
DestroyDynamicObject(GetPVarInt(playerid, neon));
DestroyDynamicObject(GetPVarInt(playerid, neon1));
DestroyDynamicObject(GetPVarInt(playerid, neon2));
DestroyDynamicObject(GetPVarInt(playerid, neon3));
DestroyDynamicObject(GetPVarInt(playerid, neon4));
DestroyDynamicObject(GetPVarInt(playerid, neon5));
DestroyDynamicObject(GetPVarInt(playerid, neon6));
DestroyDynamicObject(GetPVarInt(playerid, neon7));
DestroyDynamicObject(GetPVarInt(playerid, neon8));
DestroyDynamicObject(GetPVarInt(playerid, neon9));
DestroyDynamicObject(GetPVarInt(playerid, neon10));
DestroyDynamicObject(GetPVarInt(playerid, neon11));
DestroyDynamicObject(GetPVarInt(playerid, neon12));
DestroyDynamicObject(GetPVarInt(playerid, neon13));
DestroyDynamicObject(GetPVarInt(playerid, interior1));
DestroyDynamicObject(GetPVarInt(playerid, interior2));
DestroyDynamicObject(GetPVarInt(playerid, back));
DestroyDynamicObject(GetPVarInt(playerid, back2));
DestroyDynamicObject(GetPVarInt(playerid, front));
DestroyDynamicObject(GetPVarInt(playerid, front2));
DestroyDynamicObject(GetPVarInt(playerid, undercover));
DestroyDynamicObject(GetPVarInt(playerid, undercover1));
}