RecordSet Filter

I populate a Datalist object with customerid
field from an ADO Recordset.
And, I have a VB6 script to filter the recordset:
datCustomer.Recordset.Filter _ = “customerId Like ‘B%'”
This code just positions the cursor at the first occurence ofthe customerid beginning with the letter B. The result set coexists with customerids beginning with other letters other than B. How do I achieve having all Bs only showing in the Datalist?