auto coment when issue is assigned from unasigned status

[Vasco]

I'm looking to create this automation to comment when a ticket is assigned to agent, but only when it was previously unassigned. 
I was thinking to use the trigger "When item assigned" but I do no see a way to identify the change...
Is this possible?

[Benjamin Črnjak]

Hi @Vasco ,

you can go ahead with your idea, and the only thing you need is smart value {{fieldChange}}.

Using that smart value, you can easily get previous assignee. And then use IF block to check if previous value was  EMPTY.

here is a documentation.

kind regards,

Benjamin