I keep on getting msg 'Compile Error: Variable not defined' when I try to run this code. It seems to be when it reaches 'tbxLoadRef2' yet this object does exist within the active userform. Can anybody help me please!

Private Sub cbnAmend_Click()

' Search Database for valid reference
    Dim LoadRef As Variant

    Windows("SourceWB.xls").Activate
    Sheets("Loadings").Select
    Range("A1").Offset(1, 0).Select
    Range(Selection, Selection.End(xlDown)).Select

    With Selection
    Set LoadRef = .Find(Listbox1.Text, LookIn:=xlValues)

    End With
' Close userform
    Unload Me

' Select found value
    Windows("SourceWB").Activate
    Sheets("Loadings").Select
    LoadRef.Select

' Open userform
    frmAmendLoad.Show
' Populate userform with info from worksheet
    tbxLoadRef2.Text = Selection.Value
    Selection.Offset(0, 4).Select
    tbxSuppRef.Text = Selection.Value
    ActiveCell.Offset(0, -ActiveCell.Column + 2).Select
    tbxDate2.Text = Selection.Value

End Sub