Display Markers/Waypoint Symbols in Unity

Hello,

I am currently working on a VR-Project with the HTC Vive in Unity. I Want to place some markers on objects. For that, I created a canvas with the symbol in it. The canvas render mode is in "screen space - camera". I already wrote a script.

Code (CSharp):
  1.  
  2. public class SymbolControll : MonoBehaviour
  3. {
  4.     public RawImage symbol;
  5.     public Transform target;
  6.     void Update()
  7.     {
  8.         //target behind the player
  9.         if (Vector3.Dot((target.position -...
Display Markers/Waypoint Symbols in Unity