That was embarressingly simple.
CorelDraw uses ActiveSelectionRange. I tried a dozen variations of this without success. Thanks for the advice it's much appreciated.
For anyone who comes across this thread in the future, below is the ammended version. I've also included a message box warning when the user forgets to select any text.
Code:
Sub ReverseOrderOfParagraphs()
Dim tmpTable As Table
Dim rg As Range
InSelection = False
If Selection.Type = wdSelectionIP Then
MsgBox "Nothing Selected"
End
End If
Set tmpTable = Selection.Range.ConvertToTable(Separator:=wdSeparateByParagraphs)
With tmpTable
.Columns.Add BeforeColumn:=.Columns(1)
Set rg = .Cell(1, 1).Range
rg.End = rg.End - 1
rg.Fields.Add Range:=rg, Type:=wdFieldSequence, Text:="a"
rg.Cells(1).Range.Copy
.Columns(1).Select
Selection.Paste
Selection.Fields.Update
.Sort ExcludeHeader:=False, FieldNumber:=1, SortOrder:=wdSortOrderDescending
.Columns(1).Delete
.ConvertToText
End With
End Sub