Queries :: VBA And Query Criteria From Multi-Value Lists

I have been working with Access for some time managing some databases for my company. But now I have some problems making the database easier to use by automatically creating a Query based on different criterias.The code looks like this:

Sub Multi_value()
'Definitions
Dim strSQL As String
Dim db As DAO.Database
Dim qdf As DAO.QueryDef
Set db = Application.CurrentDb

[code]....

The problem is that the "Business Field.Value" is inserted into the Query-criteria with brackets which for some reason are not supposed to be there when I use the .Value-parameter instead of the "Business Field"-parameter.