User decision argumentation, text comment for the user decision

Dear WF Community,

The User Decision step allows to the user to take the decision for the specific step, let say, to accept or to decline. But what if I want to get not only the decision, but also the User Argumentation for that. E.g., User press «Accept» and write in text-box the reason for this specific decision.

Is it possible to implement this idea in SAP Workflow engine, if yes, how can I do it?

Thanks.