My name is Andreea. I’m a beginner in Apps Script and I want to edit a pdf by adding text. Is there any solution? I don’t really know how to use the codes and an easy to understand explanation would be helpful. I’ve tried some codes from the Internet but no success

So, i’m trying to automate my work, i’m new to javascript and i’m trying to introduce it in my routine, i’ve come with a problem, the sheets came w dates in mm/dd/yyyy format and i want to make a script to change it to dd/mm/yyyy format