Compile Error: Argument not optional

I am testing something because I am going to be programming the VBE behind
several workbooks. I was testing the following and I got the error
called..Compile Error: Argument not optional. Is there a reason why? Then
it focused on the .Export function.

Sub CopyOneModule()

Dim FName As String

With Workbooks("sirNAsequences7")
FName = .Path & "\code.txt"
.VBProject.VBComponents("Module1").Export
FName
End With
Workbooks("Changemodulecode").VBProject.VBComponents.Import
FName

End Sub

I believe FName needs to be in parentheses after Export. Export
requires at minimum a valid filename.