reportbuilder - How to find the 1st day of a previosu month in SQL Server Reporting services -

i trying set default date fist day of previous april. have found expressions 1st day of previous month

=datevalue(dateadd("m",-1,dateadd("d",-(day(now)-1),now)))  

and have found expression 1st day of april current year (=cdate("04/01/"+cstr(year(now())) need find previous april, not april of current year.

is able please?

try:

=iif(today.month>=4,dateserial(today.year,4,1),dateserial(today.year-1,4,1)) 

note if run report in april or after current year april, if run report in march or before last year april.

let me know if helps.