Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › Modifying field values for neighboring cells inside a postprocessor › Reply To: Modifying field values for neighboring cells inside a postprocessor August 22, 2024 at 7:47 am #9133 AdrianKeymaster You are right. Luckily this is easy to fix.