Problem using Match against GetFieldSelections with mutiple selections

Hello,

New to QlikView; new to this Community.  Hi.

I have a problem where the Match() seems not to work properly for me when mutiple selections exist, but does work when only one selection is made.
I am working on a small, sample .qvw file, with 11.20 version of the Personal Edition.
We just last week received training on QlikView.

I am going to post below my load script, then a description of my Sheet objects, and my display problem.
I hope this is an acceptable forum procedure... I was not sure if a .qvw file should be attached, or not.

Thanks!

------------------------------------------------------------------
LOAD SCRIPT: start
------------------------------------------------------------------

//
// --(tab)--  Main
//

SET ThousandSep=',';
SET DecimalSep='.';
SET MoneyThousandSep=',';
SET MoneyDecimalSep='.';
SET MoneyFormat='$#,##0.00;($#,##0.00)';
SET TimeFormat='h:mm:ss TT';
SET DateFormat='M/D/YYYY';
SET TimestampFormat='M/D/YYYY h:mm:ss[.fff] TT';
SET MonthNames='Jan;Feb;Mar;Apr;May;Jun;Jul;Aug;Sep;Oct;Nov;Dec';
SET DayNames='Mon;Tue;Wed;Thu;Fri;Sat;Sun';

//
// --(tab)--  Employee
//

// Primary table of Employees
Employees:
LOAD * INLINE [
EmployeeID, EmployeeName, DOB, HireDate
1001, Mike Smith, 2/10/1966, 11/19/2012
1213, James Evans, 11/25/1914, 9/1/1999
1843, Sam Duncan, 10/10/1969, 9/1/2005
  ]
;

// Rollup of Employee Dates
EmployeeDates:
LOAD distinct
      EmployeeID
, DOB as Date
, 'DOB' as EmployeeDateType
RESIDENT Employees
;
Concatenate(EmployeeDates)
LOAD distinct
      EmployeeID
, HireDate as Date
, 'Hire' as EmployeeDateType
RESIDENT Employees
;

//
// --(tab)--  Calendar
//

LET vlocalMinDate = num(makedate(2013,1,1));
LET vlocalMaxDate = num(makedate(2013,12,31));

// Loads a Temp table with all dates for 2013 and also all Employee Dates
AllDates:
LOAD
date($(vlocalMinDate) + IterNo() - 1) as Date
  AUTOGENERATE
   1
WHILE
  $(vlocalMinDate) + Iterno() - 1 <= $(vlocalMaxDate)
;
Concatenate(AllDates)
LOAD distinct
Date
RESIDENT EmployeeDates
;

// Final Master Calendar
MasterCalendar:
LOAD
   *
    , Year(Date) as Year
    , Month(Date) as Month
    , Day(Date) as Day
    , Week(Date) as Week
    , Weekday(Date) as WeekDay
    , 'Q' & Ceil(Month(Date)/3) as Quarter
RESIDENT AllDates
;

DROP TABLE AllDates;

LET vlocalMinDate = ;
LET vlocalMaxDate = ;

------------------------------------------------------------------
LOAD SCRIPT: end
------------------------------------------------------------------

My Sheet has two List boxes:
  - Month (Jan thru Dec)
  - Day (1 thru 31)

I am showing a Straight Table with:
  + Dimensions:
           EmployeeName
           DOB
           HireDate
  + Expression
           "# of Dates" --> =Count(Date)

The sheet is supposed to show Employees who have either a DOB or HireDate for a selected Month.
We want the 'DOB' and 'HireDate' cell to go 'yellow' if the Month of a value matches a Month selection.
Thus, each of these two Dimensions has an attribute expression defiend for its Background Color:

  + DOB
            =If(Match(Month(DOB), GetFieldSelections(Month)) > 0, yellow())
  + HireDate
           =If(Match(Month(HireDate), GetFieldSelections(Month)) > 0, yellow())

It works great if only one Month is chosen -- e.g. Feb or Oct or Nov
But, when more than one month is selected -- e.g. Feb, Oct...
...then my attribute expressions fail.

To augment my diagnosis, I added the following expressions:
  + Expression
           =GetFieldSelections(Month)
           =Month(DOB)
           =Month(HireDate)
           =Match(Month(DOB), GetFieldSelections(Month))
           =Match(Month(HireDate), GetFieldSelections(Month))

(1) Why doesn't Match() seem to work when GetFieldSelections() returns more than one Month selection?

If I am doing something wrong, please let me know!
Thanks,
  - Tom