Page Collections

I tried and test some header format for page collections, i miserably failed. Do I need to edit twig templates?

Post the page headers you tried, and we can look at what's the problem.

title: test-feed
published: true
process:
markdown: true
twig: true
child_type: default
routable: true
cache_enable: true
visible: true
content:
items: '@page.descendants: /my-gravtastic-blog'
order:
by: date
dir: desc
limit: 10
pagination: true

Please post between the triple back ticks.. check the question mark on the top right of the input box for more help.