Regular Expression extractor question

[SAS]

Hi Team,

I am working on developing a framework for web service testing.  came
across an issue where, I want to use a variable name as a flag name.

for example,
<accountNumber>(.+?)<

in this case, "accountNumber" text is stored in variable 'Temp' and I want
to pass it to regular expression as
<"${Temp}">(.+?)<

I am having a challenge when I tried the above approach.  appreciate your
help !!

Thanks

Thanks
SASTRY