Is there a way to run a macro on all open drawings?

so lets say I open up 20 different drawings (could be different file locations), click the macro button and have it cycle through them all?  I tried to record this function and it always used the file name.  I'm assuming there is a way to do like what you would for a batch folder run macro, but I don't know how.

I wish to have the macro save each open drawing as a pdf file name being a custom property.  macro below.

'File Save As PDF

Dim swApp           As SldWorks.SldWorks
Dim swModel         As SldWorks.ModelDoc2
Dim swDraw          As SldWorks.DrawingDoc
Dim swCustProp      As CustomPropertyManager
Dim valOut          As String
Dim resolvedValOut  As String
Dim Filepath        As String
Dim FileName        As String

Sub main()

Set swApp = Application.SldWorks
Set swDraw = swApp.ActiveDoc

If (swDraw Is Nothing) Or (swDraw.GetType <> swDocDRAWING) Then

swApp.SendMsgToUser ("To be used for drawings only, Open a drawing first and then TRY AGAIN!")

Exit Sub

End If

Set swView = swDraw.GetFirstView
Set swView = swView.GetNextView
Set swModel = swView.ReferencedDocument
Set Sheet = swApp.ActiveDoc.GetCurrentSheet

Set swCustProp = swModel.Extension.CustomPropertyManager("")

swCustProp.Get2 "dwgnumber1", valOut, resolvedValOut 'Change the custom property name here

Filepath = Left(swDraw.GetPathName, InStrRev(swDraw.GetPathName, "\"))

FileName = Left(swDraw.GetTitle, Len(swDraw.GetTitle) - 9)

swDraw.SaveAs (Filepath + resolvedValOut + ".PDF") 'Change the custom property text here
  
End Sub