On Field Control Deactivate - ABBYY Documentation

When it is launched

The script runs before a field stops being active. The script receives the field that will be activated next as an input parameter. You can change this parameter.

Parameters

Name	Type	Access	Description
Context	IFieldControl	Read/write	The field being deactivated.
NewActiveControl	IBoxedFieldControl	Read/write	The field being activated. The property has a `null` value if the field that will be activated belongs to another document.
WasModified	bool	Read/write	Specifies whether the field was modified.