Hello everyone!
I want to replace a line if it contains more than 70 characters and replace it with a simple sentence.
My code looks like this but it doesn't work.

String doc_notes_in_gross_text=(String) tmp.get(4);
                 string doc_notes= "See EBP notes
                if(doc_notes_in_gross_text.length()>=70) {
                    String doc_notes_in_gross_text= doc_notes;

How do I proceed?