Table name changes if modified with new item

You dont have to have a button, was just an idea if you wanted to be able to swap/change the ticket user for any reason - lunch break maybe or something like that.

If you went with ticket tag you would need an action to update ticket tag when ticket is created.;

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A rule containing that action to set the value on ticket created using {:CURRENTUSER}

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Then change your state format from T.User to TT.TicketUser (the name of the tag)