How can i make e clickable once “a” is completed

[ABG]

I had to switch to the Chrome browser to load your elephant of a Project.

You have violated the Do not Repeat Yourself (DRY) principal to the point of having to start over.

FAQ Section: Advice

BACK UP YOUR WORK WITH AN AIA FILE!!! Don't Repeat Yourself How to load lots of text without crashing AI2 How to overcome the App Inventor project limit of 10 MB How to post images or aia files to this Forum and how to get advice - SteveJG SteveJG's Monster List of Tips and Techniques Tips & Tricks - Chris Ward Use different screens wisely use images whose size matches the size you want them to appear on your screen Canned Replies Collection (Desktop use)

You are committing the same error with Arrangements that is warned against for Screens in this article:

Building Apps with Many Screens