Multi value Cascading Parameters Not working

Hi ,

I have created two report parameters and want them as Cascading. District Parameter depends on Region Parameter which should allow Multi selection. When I select single value in Region it works perfectly. But when I choose multiple values, District turns out to be a blank text box. Can you please advise on how to fix this?

I have used the In clause in my code

SELECT

DISTINCT

FROMDistrict(NOLOCK)

WHERESalesRegionIN(@SalesRegion)

SG