I have a table with several columns, some of which are named using numbers (e.g., 1, 2, 3, …). When I attempt to use the CATX function with these column names (e.g., CATX(“+”, _1, _2, _3, …, _26)), I encounter an issue where it reports that the columns do not exist. This behavior used to work in regular SAS, but now that I’m working with SAS Grid, it no longer functions as expected. I have an error saying that those columns don’t exist.