Hi @goodwincreative. The function receives a string as its only parameter. That means what you pass must be a string, wrapped in quotes. You can then use single quotes inside the string. Like this:
addGalleryItemDescriptions("section[data-section-id='5e584f84750bff750e72e2a8']");
Also, consider using the "<>" button in the toolbar when posting code on the forums. That makes it easier to read and check your code (and helps assure that the forum doesn't mess with it in some way when posting).
