My CSV template has some columns which would be dynamic across different users. I am trying to add the data in a collection, however my collection doesn't accept data for those dynamic columns. My column name is c006 and c007 with selector type regular expression as REGEXP_SUBSTR(:C007, '^[a-zA-Z0-9_]*$') .However, file data doesn't load in those two columns.
Am I missing any setting? Please provide documentation if any.
