how to set status while ticket rejected?

how to set status while ticket rejected?

I add a new status "close rejectect" and still have normal close. 
I want to set this new status automatically when the approval is rejected.

Under closing rules you can set to close automatically if approval in denied, but dont let you choose the estatus (only the status of task)

How to achieve it???


Could it be a custom triggers? executed while request is rejected any time, the execute a class..... ? which one to change the status to "close rejected"?? any other solution?

field and form rules are not an option, I have a lot of forms

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