Are parenthesis needed?
(\d{4}$) ?
If I do not use parenthesis in the expression the node is “green” without error, but there is no added column in my resulting table.
If I do not use parenthesis I get an error stating, basically, all input strings not matching the pattern or contained more groups than expected.
My input column is based on a url / file name, converted into a column using
Variable table row → Url to File Path → Column Filter
Not sure if the output from this sequence is causing an issue.
Ideas anyone?