Waiting For Changes Fields
This activity intended to waiting for field changes in current item. Activity triggers after value changing in some field of the current item.
SharePoint Designer phrase

Parameters#
Output parameters
| Parameter | Description | Example |
| Changes | The dictionary that represents the changesStructure of the changes dictionary:- (0)FieldBeforeValueAfterValue- (1)FieldBeforeValueAfterValue | Variable:changes |
Input parameters
| Parameter | Description | Example |
| Field Names | Comma separated list ofinternal field names to track | Status; Priority |
Example
