Hello,
// remove all landmarks by ID
wManager.Wow.Forms.UserControlMiniMap.LandmarksMiniMap.Remove("MyCircleId");
// Add landmarks
wManager.Wow.Forms.UserControlMiniMap.LandmarksMiniMap.Add(new MiniMapGenerator.LandmarkMiniMap(new Vector3(1, 2, 3), "MyCircleId", Color.Red));
wManager.Wow.Forms.UserControlMiniMap.LandmarksMiniMap.Add(new MiniMapGenerator.LandmarkMiniMap(new Vector3(1, 2, 3), "MyCircleId", Color.Red));
You don't need to run this code on all frame, by only one time (or when you want to change/add/remove position)