Counting inline records

This is probably easy for some but its stumping me a bit. I have users entering the number of businesses that are present in a property. After that they collect the property records with an inline form. basically I would like to:

compare the total with a count of entered inline records. If these are equal, then they can save. See image. Any suggestions?

Please try an expression something like below in the Valid_If of [Total Number of Businesses] column
[_THIS]=COUNT([Contacts and Businesses])

Here [Contacts and Businesses] is assumed to be reverse reference list type column in the table.

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Thanks Suvrutt, this put me on the right track.

:+1:t4:

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