Can anybody help?

I have the following Solidworks VBA macro to import a step file thus....

Dim swApp As SldWorks.SldWorks

Dim swPart As SldWorks.PartDoc

Dim swModel As SldWorks.ModelDoc2

Dim swModelDocExt As SldWorks.ModelDocExtension

Dim swImportStepData As SldWorks.ImportStepData

Dim errors As Long

Dim FileName As String

Sub Main()
   Set swApp = Application.SldWorks

FileName = "C:\Users\djsmi\Downloads\Test.step"'