Available Placeholders for POST Data for Main Menu Plug-Ins

You can use only User entity fields as placeholders for the POST data and URL.

Here are the fields that you can use as placeholders:
Placeholder User Property
allow_desktop_notifications Popup Notification
allow_vibration Vibration
design_theme Design Theme
main_resource_id Main Resource
mobile_activity_count Mobile Activity Count
mobile_inventory_count Mobile Inventory Count
mobile_provider_count Mobile Resource Count
sudate_fid Date Format
sulong_date_fid Long Date Format
sustatus Status
sutime_fid Time Format
su_zid Time zone
uid User ID
ulanguage Language
ulogin Login
uname User
uname User Name
user_type_id User Type

Some of these properties are available only if you add them to an application page, either directly or through a button for a Form for which you have configured these fields.