[Gammix]

pawn Code:

for(new i = 0; i < CountDynamicObjects(); i++)
{
    new World = Streamer_GetIntData(STREAMER_TYPE_OBJECT, i, E_STREAMER_WORLD_ID);
        
    if(World == WORLD_CSDM) DestroyDynamicObject(i);
}

If the objects are sequentially numbered, than this could help you.