Multiple Selection Data Validation Fill Current not working?

I am a newbie to this. I followed the tutorial to be able to have multiple selections from a checkbox dropdown and it is working great - except it will not “fill current” when I make the selections. How can I fix this? Thanks!

Please provide your current code and explain what you’ve tried so far.

Depending on the technology you are using to create your checkbox dropdown, the solution may vary. In general, you’ll want to ensure that the state of checkboxes is automatically updated when a user makes a selection.

If you’re using HTML and JavaScript, you can add an event handler that listens when selections are made in the dropdown menu and then updates the state of the corresponding checkboxes accordingly.