We use SharePoint as a wiki. So we create modern pages in the standard library and in a newly added column we specify that it is a wiki page. The views are filtered accordingly so that only wiki pages are displayed.
We have one parent site and 4 sub sites. The subwebsites contain the wiki pages (i.e. the modern pages with the custom property or column "Wiki page" = "Yes"). On the start page, I would like to display only the changes to these wiki pages which are located in the libraries on the subwebsites and have the column value "Wiki page" = "Yes". I know that I can create queries with KQL. FileType, Title etc. all these things I can access and use in queries.
So my question is: How can I access my newly added custom column and use it in my queries?
