I would also assume that this would work, however the flow is not triggered when a Item in the queue is set regarding an incident/case
[quote user="Leah Ju"]
Hi DuckyDev_IU,
You can set flow as following screenshot:
To get the type of the field regarding. We must use the following expression:
triggerOutputs()?[‘body/_regardingobjectid_type’]

Result:

Then you can set regarding type as condition, only type is incident can continue:

[/quote]