❔ SQL SERVER | SSRS | Dataset Column not Refresh When Using Stored Procedure with Parameter

ALTER Procedure [dbo].[sp_reportMonthly] 
    @inputReportPart varchar(20)
as      
begin 
    IF(@inputReportPart = '1' or @inputReportPart = 'debug')
    BEGIN
      select a,b,c from table1
    END
    IF(@inputReportPart = '2' or @inputReportPart = 'debug')
    BEGIN
      select q,w,e from table2
    END
end