Using .Find won't continue, stays on same paragraph - vba

Question

I have a script that looks for some text, inputted by the user. The idea is to look through a document for this text, and when it's found, select the paragraph and ask the user if they want to add this paragraph to an Index.
For some reason, I can't get the script to move past the first selected paragraph. When I run it, and click "Yes" in the UserForm (equivalent of myForm.Tag = 2), it adds to the index, but then when the .Find looks for the next instance of the text, it selects the paragraph I just had highlighted. ...it doesn't continue.
Here's the code:
Sub find_Definitions()
Dim defText As String, findText$
Dim oRng As Word.Range, rng As Word.Range
Dim myForm As frmAddDefinition
Set myForm = New frmAddDefinition
Dim addDefinition$, expandParagraph&
' expandParagraph = 1
Set oRng = ActiveDocument.Range
findText = InputBox("What text would you like to search for?")
With oRng.Find
.Text = findText
While .Execute
Set rng = oRng.Paragraphs(1).Range
rng.Select
defText = oRng.Paragraphs(1).Range
myForm.Show
Select Case myForm.Tag
Case 0 ' Expand the paragraph selection
Do While CLng(expandParagraph) < 1
expandParagraph = InputBox("How many paragraphs to extend selection?")
If expandParagraph = 0 Then Exit Do
Loop
rng.MoveEnd unit:=wdParagraph, Count:=expandParagraph
rng.Select
defText = rng
ActiveDocument.Indexes.MarkEntry Range:=rng, entry:=defText, entryautotext:=defText
Case 1 ' No, do not add to the index
' do nothing
Case 2 ' Yes, add to index
ActiveDocument.Indexes.MarkEntry Range:=rng, entry:=defText, entryautotext:=defText
Case 3 ' Cancel, exit the sub
MsgBox ("Exiting macro")
GoTo lbl_Exit
End Select
Wend
End With
lbl_Exit:
Unload myForm
Set myForm = Nothing
End Sub
(FWIW, I'm pretty new to Word VBA, but very familiar with Excel VBA). Thanks for any ideas.
Note if I click "No" (equivalent of myForm.Tag = 1), then it does move on to the next instance. Hmm.

Answer 1

Try adding rng.Collapse wdCollapseEnd before the "Case 1" line.
Explanation: When you use Find, it executes on the given Range or Selection.
If it's successful, that Range/Selection changes to include the "found" term. In this case, you in addition change the assignment again (expanding to include the paragraph).
When your code loops the current assignment to "Range" is used - in this case, Find looks only at the selected paragraph Range. So you need to reset the Range in order to have Find continue.
To be absolutely accurate, after Collapse you could also add:
rng.End = ActiveDocument.Content.End
Note: it's more correct to use ActiveDocument.Content than ActiveDocument.Range. ActiveDocument.Range is actually a method for creating a new Range by specifying the Start and End points, while ActiveDocument.Content returns the entire main story (body) of the document as a Range object. VBA doesn't care, it defaults the method to return the main story. Other programming languages (.NET, especially C#) don't work as intuitively with Word's object model, however. So it's a good habit to use what "always" works :-)