Mandate Reason for Hold Option in Task

Mandate Reason for Hold Option in Task

Is it possible to make adding a comment mandatory when setting a Task status to 'On Hold'?
It can be done for Request using 'Business Rules' or 'Field and Form Rules' but unable to do it for Task.
I've added a Single Line Comment Box for in which the technician will put the reason for hold but cannot mandate the filed while changing the status to hold.



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