Dynamic Groupby problem

hello eveyone,If I have multiple column names, and their names all contain “STEDDV”, can I use the keyword “STEDDV” to convert it into a flow variable, and use the flow variable page settings in GroupBy to capture the fields containing “STDDV”?
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Can’t using “Column Filter” node meet the requirements?

The “groupby” node also supports fuzzy matching of aggregated columns, which is a regular expression.

Thanks a lot!
I used it successfully
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