Multiple Selections for HASONEVALUE - Prior Periods

Hey Community!

I have the following code I found online to provide me Prior Period calculations based on a slider.  It works perfectly if you select one Month/Quater/Year.  However, it fails when selecting multiple periods within the Month/Quarter/Year.  Is there a way I change the code to get the desired results?  I have tried replacing "HASONEVALUE" with "VALUES" and I get an error.  Thank you in advance for your help!

Conc SM Gross PP:=
VAR DateCount =
COUNTROWS ( 'Report Date' )
VAR PeriodType =
SWITCH (
TRUE (),

AND (
HASONEVALUE ('Report Date'[CalendarYearID]),
DateCount = COUNTROWS ( PARALLELPERIOD ('Report Date'[Date], 0, YEAR ) )
), "Year",

AND (
HASONEVALUE ('Report Date'[CalendarQuarterID] ),
DateCount = COUNTROWS ( PARALLELPERIOD ( 'Report Date'[Date], 0, QUARTER ) )
), "Quarter",

AND (
HASONEVALUE ('Report Date'[CalendarMonthID] ),
DateCount = COUNTROWS ( PARALLELPERIOD ('Report Date'[Date], 0, MONTH ) )
), "Month",

AND (
HASONEVALUE ('Report Date'[CalendarYearID] ),
DateCount = COUNTROWS ( DATESYTD ('Report Date'[Date] ) )
), "YTD",


AND (
HASONEVALUE ('Report Date'[CalendarQuarterID]),
DateCount = COUNTROWS ( DATESQTD ( 'Report Date'[Date] ) )
), "QTD"

)
RETURN
SWITCH (
PeriodType,

"Year", CALCULATE ( [Conc SM Gross], PREVIOUSYEAR ('Report Date'[Date]) ),
"Quarter", CALCULATE ( [Conc SM Gross], PREVIOUSQUARTER ( 'Report Date'[Date] ) ),
"Month", CALCULATE ( [Conc SM Gross], PREVIOUSMONTH ('Report Date'[Date] )),
"YTD", CALCULATE ( [Conc SM Gross], PREVIOUSYEAR( 'Report Date'[Date] )),
"QTD", CALCULATE ( [Conc SM Gross], PREVIOUSQUARTER('Report Date'[Date] ) )

)