Adding a record based on combo

[cjamps]

I am trying to add a record to a child database depending on what the user sees in the combo. Once the user determined a record should be added the AddTaskBttn is pressed.

While the following function adds the serial number to the database when the form is filled out an error message tells me that the record can't be saved because the serial number is null. I have tried to use the doevents but to no avail.

Private Sub AddTaskBttn_Click()
Dim intX As Integer
Dim Sn As String
Sn = Me.CmbTaskList.Column(0)
DoCmd.SetWarnings False
DoCmd.RunSQL "Insert Into Tasklist( SerialNumber ) Select '" & Sn & "' As Expr;"


DoCmd.SetWarnings True
DoCmd.OpenForm "Task", , , "[TaskList.SerialNumber] =" & "'" & Me.cmbSerialNumber.Column(0) & "'", acFormAdd, acDialog
For intX = 1 To 200
Forms!Task!MailingDate_Label.Caption = "Doing something " & intX & " "
DoEvents
Next intX
DoCmd.Close acForm, "Task"
End Sub

[cjamps]

I have changed the code slightly. When the add task button is pressed the form is supposed to collect the rest of the information for the record. The form now opens and the serial number is added to the database however the rest of the field content on the form does not save

Private Sub AddTaskBttn_Click()
Dim Sn As String
Sn = Me.cmbSerialNumber.Column(0)
DoCmd.SetWarnings False
DoCmd.RunSQL "Insert Into Tasklist( SerialNumber ) Select '" & Sn & "' As Expr;"
DoCmd.SetWarnings True
DoCmd.OpenForm "Task", , , "Dockets.SerialNumber =" & "'" & Me.cmbSerialNumber.Column(0) & "'", acFormAdd

End Sub

On the Form Open of Task I have the following code

Private Sub Form_Open(Cancel As Integer)
If Not IsNull(Me.OpenArgs) Then
Sn.Value = Me.OpenArgs
Me.Requery
End If
End Sub

On the task form I have the following save and close button

Private Sub FormClose_Click()
On Error GoTo Err_FormClose_Click
DoCmd.Save
DoCmd.Close
Exit_FormClose_Click:
Exit Sub
Err_FormClose_Click:
MsgBox Err.Description
Resume Exit_FormClose_Click

End Sub