Triggers a script to run if a media file is playing from a field or URL, and a user or a script step setting changes the playback state. The following events can activate this script trigger:
When the script runs
After the event has been processed.
Modes in which the trigger can be used
Browse and Find modes.
Originated in 
FileMaker Pro 14.0
Related topics 
Setting up script triggers
Setting script triggers for layouts
Setting script triggers for objects