Change Recordsource using SQL

I would like to change my recordsource using SQL and filter my recordsouce using Date.. So, I try to create source code like this

data1.recordsource = "select * from mytable where proddate = " & maskedbox1.text

It show nothing , So, I try

data1.recordsource = " select * from mytable where proddate = " & "'" & maskedbox1.text & "'"
It show an error data type mismatch..

So, I try for declare variable as date

dim sdate as date

sdate = proddate

data1.recordsource = "select * from mytable where proddate = " & sdate

It still show nothing, even I try

data1.recordsource = "select * from mytable where proddate = " & "5/5/98"

It still show nothing.. How could I solve this problem?

PS. I use MS-Access 95 as my database and proddate is a field use Date as data type , format shortdate..

Thank you in advance.