Changing GUITEXT Value...

I have a script where im trying to change the value of a guitext's prefab when its spawned.. but I cant seem to find the right code to access it.. its name is "DamageText"

 void SpawnPts()  {
         GUIText ptsPrefabInstance;
         ptsPrefabInstance = Instantiate(ptsPrefab, ptsPrefab.position, ptsPrefab.rotation) as GUIText;
         GameObject.Find("DamageText").guiText.text=damage.ToString();
         }