WordPress, Siteorigin pagebuilder. How to create relationship between page and post?

So I am using Siteorigin Pagebuilder to create my custom pages. I am creating a page that is built using different posts. So Page structure is something like this:

PLEASE Don’t mind the markup 🙂 its just to visually display the structure

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 <page>
    <post id="25"></post>
    <post id="26"></post>
    and etc...
 </page>

So i am looking for a way where I can grab that particular ID and store it in a li item.
At the moment I can get all post ID's' but not related to that page. I don’t want a hardcoded solution. This sidebar must be flexible as all pages will have the same sidebar but li items will be related only to their page.

is there any WP way around it?

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