Forms :: Query Doesn't Work To Filter In Form

I've got a single form ("Lead Data") that has Cascading Combo boxes that work perfectly, entering data into "tblLeadData":cboMatterTypeIDcboMatterIDcboAttyIDcboPlglID Attorney & Paralegal are the people assigned to the Matter. My problem is in finding a way to allow a specific Attorney or Paralegal to filter for only his or her records. I made a query of tblLeadData that works perfectly as a query, but when I use it as a filter in an "on click" macro event, it doesn't work. I suspect it's because of the cascading combos, because I've successfully used this kind of query based macro filter in the past.

Okay, more on how it is set up. The same people are always assigned to a specific matter, so when you pull down the Atty & Plgl combo boxes, there's only one person. So it isn't a true Parent/Child relationship, but it's working. And there were two advantages of this set up over an autopopulate set up (which I considered): 1) When I change something in the reference tables (refAtty and refPlgl), it also changes in tblLeadData & 2) in case there's an exception to the usual assignment pattern, we can just leave Atty & Plgl blank and put the correct assignment in a text box called "AssignmentNotes."

So my query of tblLeadData that works, qryLeadDataAssign, uses the following fields:

tblLeadData.AttyID
refAtty.Atty
tblLeadData.PlglID
refPlgl.Plgl
tblLeadData.AssignmentNote
Expr1: [Atty] & " " & [Plgl] & " " & [LeadAssignmentNotes]Criteria: Like "*" & [Who?] & "*"

The Join Properties in the query between tblLeadData and refAtty is set to "2: Include ALL records from 'tblLeadData' and only those records from refAtty" where the joined fields are equal." And the same for Plgl.

When I run the query, it asks me a single time, "Who?", I put in the name and it pulls up all instances of the name from any of the 3 fields. It acts as a "contains" filter, not an "equals" one.

As for my cascading combos, here are the settingsMatterTypeIDRow Source:

SELECT refMatterType.MatterTypeID, refMatterType.MatterType, refMatterType.[MatterType] FROM refMatterType ORDER BY refMatterType.[MatterType]; On Change Event:Me.cboMatter.Requery
MatterIDRow Source: SELECT tblMatter.MatterID, tblMatter.Matter FROM tblMatter WHERE (((tblMatter.MatterTypeID)=[Forms].[LeadData].[cboMattertype])) GROUP BY tblMatter.MatterID, tblMatter.Matter, tblMatter.Matter ORDER BY tblMatter.Matter;
On Change Event:Me.cboAtty.Requery

[Code] ....

I put a button on the form and put an embedded macro as an "On Click" event. The macro is an "ApplyFilter" and the filter name is qryLeadDataAssign. When I click on the button, I am asked to enter

data 3 times:Enter Parameter Value: Atty
Enter Parameter Value: Plgl
Enter Parameter Value: Who?

Clearly, the expression in the query doesn't function in the button. And the result, no matter what I put in, is that all of the records are still there, although the filtered button is activated.

I tried putting the expression from the query into the macro builder window, but I for sure don't know what I'm doing there and haven't been able to make it work.