Trigger a flow if subcategory is changed from 'Incident form variables'

[Amey8]

I'm working in incident management in ServiceNow. I want to trigger the flow designer only when the subcategory is changed from the incident form variables of an existing incident.

I was able to put the question but 'changes' operator is not present in the list.

Is there any other way this can be achieved ?

[Ankur Bawiskar · Accepted solution]

@Amey8 

yes changes is not available for variables.

why not check do this?

1) have after update business rule and see if that variable got updated

2) then use script to trigger your Subflow

BR Condition: After Update

current.variables.variableName.changes()

Script: check this on how to run subflow from script

Scripting with Flows, Subflows, and Actions 

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