Setting properties to Access field using VBA

I want to set the format properties of an Access table field using vba. I try with the following code, but get an error at the line " myField.Properties(PropertyName) = PropertyValue"
What needs to be changed?



code:

Public Function fStartup

      Call SetDAOProperty("Tablename", "Fieldname", "Format", "000000-0000")

 End Function


Function SetDAOProperty(Optional mTable As String, Optional mfield As String, Optional PropertyName As String, Optional PropertyValue As String)
 
    Dim db As DAO.Database
    Dim myTable As DAO.TableDef
    Dim myField As DAO.Field
 
    Set db = CurrentDb()
    Set myTable = db.TableDefs(mTable)
    Set myField = myTable.Fields(mfield)
 
    myField.Properties(PropertyName) = PropertyValue

    myField.Properties.Refresh
    SetDAOProperty = True
    Exit Function

End Function
FagerbergDellbyAsked:
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database Architect / Systems AnalystCommented:
Here you go:

    Dim db As DAO.Database, prp As DAO.Property
    Set db = CurrentDb
   
    With db.TableDefs("MyTable").Fields("MyField")
            'On Error Resume Next ' This is needed one prop is created
            Set prp = .CreateProperty("Format", dbText, Chr(34) & "000000-0000" & Chr(34))

            If Err.Number = 0 Or Err.Number = 3367 Then
                 'do nothing  3367 means Property already exists
                Err.Clear
            Else
                MsgBox "error " & Err.Number & "  " & Err.Description
                Exit Function
            End If
            .Properties.Append prp
    End With
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FagerbergDellbyAuthor Commented:
Super, works like a charm. Many thanks!
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database Architect / Systems AnalystCommented:
You are welcome ...

mx
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