Queries :: Update A Query Based On Results From Another Query Using Count Function

I run a physical therapy office and patients come in for treatment either 3, 4 or 5 times per week. My database is used to track these frequencies (among other things).

I have 3 queries which count how many patients come in 5, 4 and 3 times/week.

In my main table I have fields called "how many 5's", "how many 4's" and "how many 3's".

I have tried to design an update query which will update those fileds in my main table to reflect the counts in the 3 queries mentioned above.

(I'm not using SQL view, I'm using the query design view)

In the "update to:" row, I use the Build function and locate the count I'm looking for.

Problem: when I run the query I get the error: Operation must use an updateable query.