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Support for Regex in Flow

IsMatch, Match, and MatchAll functions are already supported in PowerApps. Why can't they also be supported in Flow?  Here's a simple scenario that is very difficult to do without Regex support.


I'm starting an Approval Flow to be sent to a user's manager.  I check a user's manager's mailbox to see if an Out of Office message is set.  Such a message will normally include the email address for another person to contact.  I want to extract that email and use it to escalate the approval to that other person.  I can easily extract that email address using Match().  Doing it without Regex is almost impossible.


Why are these functions supported in PowerApps but not in Flow?

Status: New
Advocate I
Advocate I
Resolver III

one of the best, and certainly most underrated feature requests out there.  I wouldn't have my current issue if Regex was supported.