Form Rules - if field value changed

I have had a number of different situations where I wanted to take some kind of action when a field changed. For example, if I want to track the date and time that a field was changed, or insert a record in an activity log but only if there was actually something changed.

I envision it as part of the record rules to say:

WHEN [ Field Name ] was modified

There might be a super-crazy intense way to do this with javascript and the API, but I haven't ventured there.

If we could send an email only if a status field changes, and similar things, it would make Knack super-extra-powerful and awesome.

Thanks for considering!


Yes! I need this too


Similar idea as I had here, used for emails or anything else:



I need this same functionality and write javascript to implement now.