script pick up object pls help

i have a script for pick up object for my survival game but doesnt work 100% I can only pick up objects with tag Wood and i cant pick object by another tag pls help this is the script

 #pragma strict
 
 var rayLength : int = 10;
 
 private var inventory : Inventar;
 
 private var guiShow : boolean = false;
 
 var player : GameObject;
 
 function Start()
 {
     inventory = GameObject.Find("First Person Controller").GetComponent(Inventar);
 }
 
 function Update()
 {
     var hit : RaycastHit;
     var fwd = transform.TransformDirection(Vector3.forward);
     
     if(Physics.Raycast(transform.position, fwd, hit, rayLength))
     {
         if(hit.collider.gameObject.tag == "Wood")
         {
             guiShow = true;
             
             if(Input.GetKeyDown("e"))
             {
                 inventory.wood++;
                 Destroy(hit.collider.gameObject);
                 guiShow = false;
             }
             if(hit.collider.gameObject.tag == "Stick")
         {
             guiShow = true;
             
             if(Input.GetKeyDown("e"))
             {
                 inventory.stick++;
                 Destroy(hit.collider.gameObject);
                 guiShow = false;
             }
                         if(hit.collider.gameObject.tag == "Stone")
         {
             guiShow = true;
             
             if(Input.GetKeyDown("e"))
             {
                 inventory.stone++;
                 Destroy(hit.collider.gameObject);
                 guiShow = false;
             }
             }
             
     
         }    
     }    
     }        
     else
     {
         guiShow = false;
     }
     }
      function OnGUI()
     {
     if(guiShow == true)
     {
         GUI.Box(Rect(Screen.width / 2 - 150, Screen.height / 2 - 150, 100, 20), "PickUpObject!");
     }
     }

and this is the inventory script

 #pragma strict
 var menuSkin : GUISkin;
 
 var wood : int = 20;
 var stone : int = 20;
 var stick : int = 20;
 var bottledWater : int = 3;
 
 var minimumVal : int = 0;
 
 private var showGUI : boolean = false;
 
 private var playerGUI :SurvivalSistem;
 
 function Start() { playerGUI = GameObject.Find("First Person Controller").GetComponent(SurvivalSistem); 
 } 
 function Update() { if(wood <= 0) { wood = minimumVal; 
 }
 
     if(wood <= 0)
     {
         wood = minimumVal;
     }
     
 
  if(stone <= 0)
  {
      stone = minimumVal;
  }
  if(stick <= 0)
  {
      stick = minimumVal;
  }
      if(bottledWater <= 0)
     {
         bottledWater = minimumVal;
     }
  if(Input.GetKeyDown("i"))
  {
      showGUI = !showGUI;
  }
    if(showGUI == true)
     {
         Time.timeScale = 0;
         GameObject.Find("First Person Controller").GetComponent(FPSInputController).enabled = false;
         GameObject.Find("First Person Controller").GetComponent(MouseLook).enabled = false;
         GameObject.Find("Main Camera").GetComponent(MouseLook).enabled = false;
         GameObject.Find("FPSArms_Axe@Idle").GetComponent(PlayerControl).enabled = false;
      }
         if(showGUI == false)
     {
         Time.timeScale = 1;
         GameObject.Find("First Person Controller").GetComponent(FPSInputController).enabled = true;
         GameObject.Find("First Person Controller").GetComponent(MouseLook).enabled = true;
         GameObject.Find("Main Camera").GetComponent(MouseLook).enabled = true;
         GameObject.Find("FPSArms_Axe@Idle").GetComponent(PlayerControl).enabled = true;
     } 
     } 
      function OnGUI()
     {
     if(showGUI == true)
     {
         GUI.skin = menuSkin;
             GUI.BeginGroup(new Rect(Screen.width / 2 - 150, Screen.height / 2 - 150, 300, 300));
                 GUI.Box(Rect(0, 0, 300, 300), "Basic Inventory");
                 
              //Resources collected
              GUI.Label(Rect(10, 50, 50, 50), "Wood");
              GUI.Box(Rect(60, 50, 30, 30), "" + wood);
              
              GUI.Label(Rect(90, 50, 50, 50), "Stone");
              GUI.Box(Rect(130, 50, 30, 30), "" + stone);
              
              GUI.Label(Rect(170, 50, 50, 50), "Stick");
              GUI.Box(Rect(200, 50, 30, 30), "" + stick);
              
          
                  }
                  
                  
                 GUI.Label(Rect(10, 210, 50, 50), "BottledWater");
                 GUI.Box(Rect(60, 210, 30, 30), "" + bottledWater);
                 if(GUI.Button(Rect(100, 210, 100, 30), "Drink Water?"))
                 {
                     if(bottledWater >= 1)
                     {
                         bottledWater--;
                         Drink();
                     }
                 }
              }
        function Drink()
 {
     playerGUI.thirstBarDisplay += 0.1;
 }
           
 function Reset()
 {
     wood = minimumVal;
     stone = minimumVal;
     stick = minimumVal;
 }