Automatically fill field in PageTable with Title of page where its used

[Erik Richter]

Hey folks,

hope someone can help me out!

I have a pages with the template movie.

On each movie page we have a PageTable where we can add multiple new pages with the template screening under a hidden parent in the tree. The screenings have a unique screening Nr. as title and fields for date and time.

I want to have a field for the screenings which is automatically filled with the movie name (page select or something) which it belongs to. Should be possible with a save hook or something, can somebody help me out with this? 

Thanks so much!