how to update or set the value of transaction menu item in step transition rule

Summary:

I have a requirement that a transaction menu item needs to be updated while transition from one step to another step dynamically.

Initial step -1

In Process —User Submitted Transaction for Approval

Menu Item Value = "InProcess" (Status)

Click submit for Approval

Step-2

Step ⇒ Approved

Menu Item Value ⇒ is not changing using formula or function.

Pls suggest a solution..

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