Hi! I searched, but I couldn’t find the solution I wanted. As you can see, I want to delete or remove this characters: “D:\KNIME_0347_Bitterfeld\DART\2016\034716TXW_” at the beginning of the field: [image] I have tried with the regexreplace function in String Manipulation, but nothing happens: [image] ` I’m new in Knime and I’m spending hours on this issue… Do you have any suggestion? Thanks for your help! Robert

Hi @bermq if you want to use the split node ^.{0,}W_(.{1,})$ should work so translated ^=beginning of string .=any character (expect new line) {0,}=repeated 0 or more times W_=followed by W_ (.{1,})=followed by any character repeated 1 or more times -> save as matching group the () are for that $=end of string it will only return a string if all requirements above are met and return each matching group as a new column If you want to use the string replacer node (regex mode and match whole string) Search string ^.*W_ ReplaceBy “”