Passing multiple value parameters in SSRS to stored procedure

Question

I am trying to pass a multiple value string parameter to a table type parameter in a SQL Server 2012 stored procedure. I paste this code in the dataset of SSRS:

Answer 1

declare @Vendors_Filter nvarchar(max) = 'a,b,c'
declare @Vendors nvarchar(max) 
set @Vendors =''''+replace(@Vendors_Filter,',',''',''')+'''' 
select @Vendors