Inventory, why didn't work element?

Hey guys. Why didn't work element? GUI.Label (windowRect,"Heeey");

 function OnGUI()
 {
 if(ShowInventory==true){
     var texToUse : Texture;
     var currentInventoryItem : InventoryItem;
     var windowRect : Rect = Rect (60, 60, 300, 300);
      //Go through each row
      for( var i = 0; i < inventory.length; i ++ )
      {
          // and each column
          
          
          for( var k = 0; k < inventory[i].length; k ++ )
          {
              currentInventoryItem = inventory[i][k];
            
              //if there is an item in the i-th row and the k-th column, draw it
              if( inventory[i][k] == null )
              {
                  GUI.DrawTexture( new Rect( offSet.x+k*(iconWidthHeight+spacing), offSet.y+i*(iconWidthHeight+spacing), iconWidthHeight, iconWidthHeight ), emptyTex );
              }
              else
              {
                  GUI.DrawTexture( new Rect( offSet.x+k*(iconWidthHeight+spacing), offSet.y+i*(iconWidthHeight+spacing), iconWidthHeight, iconWidthHeight ), currentInventoryItem.texRepresentation );
              }
              
                 if(currentInventoryItem != null && 
                    GUI.Button( new Rect( offSet.x+k*(iconWidthHeight+spacing), offSet.y+i*(iconWidthHeight+spacing), iconWidthHeight, iconWidthHeight ), "", GUIStyle("label") ))
              {
             
              GUI.Label (windowRect,"Heeey"); // Why didn't work?
              
                  currentInventoryItem.worldObject.transform.position = transform.position;
                  currentInventoryItem.worldObject.transform.rotation = transform.rotation;
                  currentInventoryItem.worldObject.active = true;
                  
                  if(Input.GetMouseButtonUp(0))
                  {        
                      //Equip it
                      //currentInventoryItem.worldObject.transform.parent = transform;
     
                  } else if(Input.GetMouseButtonUp(1))
                  {
                      //Drop it
                      inventory[i][k] = null;    
                      currentInventoryItem.worldObject.transform.parent = null;
       
                  }
              }
             
          }
     }
 }