Add-On: Merge Tags
This Gravity Forms add-on adds an admin page to your WordPress back-end with a list of all the merge tags in your form. Besides that it gives you information (in different tabs) about field types (for example text, radio, hidden, select, email, checkbox, etc), Standard Gravity Forms Merge Tags (and for GravityView and Gravity Flow), a replacement for the all_fields Merge Tag (with or without fileuploads) and Gravity Flow Step information.
Conditional Logic Tab
Dynamic population url
Filter Hook Meta Tab
For this functionality you'll need to install the GravityWP - Merge Tags Add-on.Read more