regex: replacing one group of a match

[darrel]

I'm new to .net's regex capabilities. I've made a regex:

dim r as new regex( _
"(?<tagOpening>(<))" & _
"(?<theTag>(" & tagToFind & "))" & _
"(?<anything>(.[^>/]*))" & _
"(?<theAttribute>(" & attributeToFind & "))" & _
"(?<theEqualsSign>((\s*)=(\s*)))" & _
"(?<theAttributeValue>((.[^\s/>]*)))" _
, RegexOptions.IgnoreCase)

This should work.

Now, I have a string that I'd like to apply the above regex to, and then
replace one of the named groups with a new value. Can I just do this:

dim caption as String = r.replace(theAttributeValue, "10")

If so, then I think I just need the proper syntax to select the named group
in the regex.

However, I have a hunch that I need to do more than this. Maybe create a
match?

-Darrel