title: App Inventor, add items to list and view
body: <p>I've been searching and watching tons of youtube videos, but i really can't figure this out. </p>
  
  <p>i have a drop-down menu, with some items in it. The user have to pick an item and this item should be stored in the display screen. 
  Right now i have it so the user can pick an item from drop-down menu in screen1 and add to screen2. 
  But if i want to add another item, the itemViewer delete the first item and replace it with the new one.</p>
  
  <p>So what i want, is to add more items from screen 1 to screen 2, without it replace the other one. </p>
  
  <p>and here is my code<br>
  <strong>Screen1</strong>
  <a href="https://i.stack.imgur.com/v36zL.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/v36zL.jpg" alt="enter image description here"></a>
  <strong>Screen2</strong><br>
  <a href="https://i.stack.imgur.com/gmqZg.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gmqZg.jpg" alt="enter image description here"></a></p>