VBA "Run-time error '424': Object required

[Larsid]

This my first attempt writing code in Excel. I am stupmed on why when i press run sub while under forms the following code works but when i load it into Modules and run it I get "run-time error 424 object required"?
I get the error on the bold text.

Sub PartListForm()
UserForm.Show
End Sub
Private Sub cmdOK_Click()
ActiveWorkbook.Sheets("Part_List").Activate
Range("a3").Select

Do

If IsEmpty(ActiveCell) = False Then
ActiveCell.Offset(1, 0).Select
End If
Loop Until IsEmpty(ActiveCell) = True
ActiveCell.Value = txtPartNumber.Value
ActiveCell.Offset(0, 1) = txtCustomer.Value
ActiveCell.Offset(0, 2) = txtCustomerItemNumber.Value
ActiveCell.Offset(0, 3) = txtothercustitem.Value
ActiveCell.Offset(0, 4) = txtFilmType.Value
ActiveCell.Offset(0, 5) = txtFilmSize.Value
ActiveCell.Offset(0, 6) = txtFinishedRollSize.Value
ActiveCell.Offset(0, 7) = txtSleeveSize.Value
ActiveCell.Offset(0, 8) = txtMachineType.Value
Range("A3").Select
End Sub
Private Sub PartListForm_Initialize()
txtPartNumber.Value = ""
txtCustomer.Value = ""
txtCustomerItemNumber.Value = ""
txtothercustitem.Value = ""
txtFilmType.Value = ""
txtFilmSize.Value = ""
txtFinishedRollSize.Value = ""
txtSleeveSize.Value = ""
txtMachineType.Value = ""
txtPartNumber.SetFocus
End Sub
Private Sub cmdCancel_Click()
Unload Me
End Sub
Private Sub cmdReset_Click()
Call UserForm_Initialize
End Sub

Thanks

 

[BrianB]

The code does not "know" where to look outside the form - so you need to be explicit, something like :-

Userform1.txtPartNumber.Value = ""

(it is not a good idea to use "reserved words" as variable names.
ie. words that Excel uses already. In this case 'Userform' is an object type. We can often get away with it, but as a project grows the code can start giving errors.)