How to masked mask in Flash

1. First, make your object onto your stage, make sure to include mask in your title.
2. Next go to your modify tab, timeline, then click on your layer properties.
3. A window will pop up, there will be options there, click on the on that says mask, and lock it
4. Next, create another layer and but your symbol on it
5. Do Step 2 again
6. Click on masked, and lock it
7. Test Movie