Implementing Setter/Getter

So I've been trying to build an item pick up system in a game, but I've run into a bit of a problem. The system uses two scripts, one to mark the items as held, and another to handle picking up the item itself. The add item to inventory script looks like t$$anonymous$$s

 public void foundItem(int symbolNum){
         //Iterates through all the clue items based off the length of images there are
         //If the itemNum = images[ itemNum - 1] you have found the item
         //Set the item that you have found to isFound = true
         //Set the newly found item image to a visible transpency
         print ("Looking for item# "+symbolNum);
         //If the clue value is the same as symbol value, proceed
         GameObject[] clueSymbolGOs = GameObject.FindGameObjectsWithTag("ClueSymbol");
         //We are now looking for the clueItem i that matches s (symbol number)
         foreach(GameObject clue in clueSymbolGOs){
             if(clue.GetComponent<ClueBehaviour>().getClueSymbol() == symbolNum){
                 print ("Found clue symbol game object # "+ symbolNum);
                 //clue.GetComponent<GUITexture>().texture = symbolHolder;
                 //t$$anonymous$$s.gameObject.GetComponent<GUITexture> ().texture = images[itemNum];
                 clue.GetComponent<ClueBehaviour>().isFound = true;
                 clue.GetComponent<GUITexture>().color = new Color(1f, 1f, 1f, 1f);
             }
         }
     
     }

$$anonymous$$ed, there's more to that script than t$$anonymous$$s, but t$$anonymous$$s is the only part that pertains to what I'm doing. The second script functions by feeding a number to the int symbolNum, allowing the first function to know what to check off as found. The code I have to feed the number looks like t$$anonymous$$s

 void OnTriggerStay2D() {
     if (Input.GetMouseButtonDown (0)) {
         Symbolmatch = (GetComponent<ClueBehaviour>().foundItem(2));
         Destroy (t$$anonymous$$s.gameObject);
         //Find.gameObject("Clue2").GetComponent<ClueBehaviour>().clueSymbol = 2;

         Debug.Log ("clicked");
     }
 }

Looking around has told me that a getter/setter is the best way to make t$$anonymous$$s work, but I don't know how to set one of those up properly, despite looking at a number of example and tutorial videos. Can someone help me get t$$anonymous$$s working?