Hi @MarekV
All that have “manual” in the title so don’t select.
In this case, I would personally stay away from the Regex and instead use a wildcard pattern.
If you exclude the matching pattern *manaul* with the checkbox for wildcard usage enabled, you get the desired result.
But since you are learning Regex, the reason for it failling is because the expression that you are using only captures a subsection.
While the Row Filter checks if entire string matches the expression, which is not the case. If you add a leading wildcard by the means of .* , the whole string will be captured and the KNIME row filter works subsequently.
Hope this helps!