Custom Format Script to Enter Additional Item to Numbered List if Item is Chosen From Drop Down List

[kellyw6962]

Is there a code I can use as a custom format script that will enter an additional item to an existing numbered list within a PDF fillable form, if a particular item is chosen from a drop down list?

[Thom Parker]

Depends.  Is this numbered list in a form field or annotation?  Or is it page content?  If it's page content, then no.