I am using the VBScript_RegExp_55 library in an Excel-based VBA project to
build a text-file processor that uses rules stored in an Excel spreadsheet.
I have used Regex utilities before, so I understand the concepts of text
capture and re-use in a Regex expression.

But when I try to capture text with (*), for example, and then try to re-use
it with \1, I get either no changes made, or an object-generated error 5081.
I have not been able to isolate when these two results occur.

I believe my program code is basically correct, because I can do search and
replace type stuff just fine, including in the same "run" as the capture
operations that fail. Here are my options settings:

objRgx.IgnoreCase = False ' Set case sensitive.
objRgx.Global = True ' Set replace all.
objRgx.MultiLine = True ' Set multiline mode.

Thanks for any help you can provide.