Editing Forms Accessibility in Adobe Acrobat (section)

== Custom form field validation ==

* '''Field Properties''' (Ctrl+I) > '''Format''' tab 
** '''Select Format Category:''' Custom
** Enter JavaScript into '''Custom Format Script''' and/or '''Custom Keystroke Script''' fields.

<p class="alert-warning">To set custom scripts, it's necessary to access the form field's properties by right clicking on the field itself in the content view as opposed to selecting the field in the Forms pane. When the field is selected through the Form pane, edits in those custom script fields won't save, and it's impossible to change the format to "custom", even through the same dialog is displayed.</p>

[[file:Acrobat-form-field-custom-format-dialog.png|thumb|left|form field format dialog]]