When exporting using the PslTransBundle object, you can just insert complete translation list objects PslTransList with all items.

If you want to export just parts into a TMX file loop all items within the PslTransList objects that you want to export. That allows you to check your export criteria for each PslTransString

Writing the TMX file also must be part of your code

Thank you for your input.  I'm writing codes with a loop to go through all translation units in a Passolo file, evaluate each of them to see if it meets my criteria, and if it does, export the TU to .tmx file.  My codes look like this for the loop:

For Each lang In prj.Languages
  'Create the translation "bundle" for TMX export
  Dim bundle As PslTransBundle
  Set bundle = prj.PrepareTransBundle
  For Each translst In prj.TransLists
    For i = 1 To translst.StringCount
      If translst.Language Is lang Then
        If (translst.String(i).DateTranslated > dateModifiedSpecified) Then
          translst.String(i).OutputError(lang.LangCode & ": " & translst.String(i).DateTranslated)
          bundle.AddTransList(translst.String(i))
        End If
      End If
    Next
  Next
  Dim filename As String
  filename = "C:\_MyWork\Temp\" & lang.LangCode & ".tmx
  prj.Export "TMX Export", bundle, filename
Next lang

The if statement "translst.String(i).DateTranslated > dateModifiedSpecified" evaluates each TU in Passolo file (the dateModifiedSpecified has been already defined at the beginning of the codes), and the "translst.String(i).OutputError" statement is indeed working (the TU that meets the criteria does get displayed in the Messages pane in Passolo), but no .tmx files gets generated under the C:\.  Shouldn't the "prj.Export "TMX Export", bundle, filename" creates .tmx file with the above codes?

Hi, Windows 10 you can't  write at the root of the c:\ drive. Write the file in a subfolder.

Hi, Windows 10 you can't  write at the root of the c:\ drive. Write the file in a subfolder.

Thank you for your input.  My code is actually written to export in a temp dir, not the root of C: drive.  I just didn't share that details.  I have updated the snippet from my original post now.