Screen reader not reading movies loaded from library

Greetings.

Making a slide presentation that must be accessible to screen readers.

Using addChild to add movieclips from the library into an empty movieclip on the stage when the thumbnails are clicked or using the enter key.

The screen reader will read the movieclip initially loaded when the html page loads, but none after that.

Any code to force the screen reader to read the newly loaded movieclip?

Thanks in advance. Not much documentation in designer speak for accessibility. :slight_smile: