FYI. It is looks like the IF() function can not be an argument of the Small() and Large() functions.
Update, 11 March 2019
See the re-attached model file… Sorry, I can not re-attached model file!?
I noticed that some of the attached files of my past posts (answers) and even the posts themselves are deleted!!! Subx, why are you doing it?
Nobody here is deleting any posts or attachments. Perhaps there was an issue with the forum migration to the new platform – I apologize for this inconvenience.
Thank you for bringing this behavior to our attention, I will ensure it is logged as an improvement in our backlog.