Error 3464 Data type Mismatch

We are using VB 6.0 and Access 2000

In an SQL statement in a VB program we are getting Error 3464 - Data Type Mismatch.

The pertinent code is as follows:

Dim stDrawNum As String
Dim iIssueNum As Integer
Dim RS as dao.Recordset
Dim DB as Database

(datDuplicate is a data control on the form)

stDrawNum = datDuplicate.Recordset("Drawing #")
iIssueNum = datDuplicate.Recordset("Issue #")

Set RS = DB.OpenRecordset("Select * from [Lucent]" _
& " Where [Drawing Number] = '" & stDrawNum & "'" _
& "and [Issue Number] = '" & iIssueNum & "'")

It is at this point that we get Error 3464. The Issue # in the database is an integer. If we use only 'stDrawNum' in the SQL statement, no error occurs, so it is the 'iIssueNum' that is giving us the problem. I had this problem before and it had nothing to do with the data types, it was something else that was causing the error, however I forget what it was. Can anyone help me here please.