Firstly, I am a beginner and have never done any scripting! Is there a way that I can custom script a text variable for a paragraph/character style to pull from previous page? Or has this already been done? We are currently only given first on page and last on page and I need more options.

Example: I am working on a book with chapters and verses, and would like each page header to show the following:

first chapter number:first verse number-last chapter number:last verse number.

Currently if the page starts with a verse it will pull the first verse available but then pull the chapter number from further down the page and will be incorrect. Frequently the chapters cross a page and the page will start with a verse. Therefore if the page starts with a verse the variable needs to pull the previous chapter number. 

Added to that - is it possible to have it do an if/then... if the chapter header is at the top of the page it uses that, but if a verse is at the top of the page it pulls the chapter number from previous page. 

Please keep in mind that this is all very new to me! Thank you.