I have repeating sections on my custom sheet, but don't know a lick of javascript.  I'd like to make a sheetworker script which on a change to the repeating section extracts all values for the repeating section and concatenates them into a string.  Each time the the repeatgin section changes the string is reset and reconcatenated.  This string should then set to an attribute.  Is there anywhere someone can point me to on how to do this?