Explain to me how the data selector in the "GK New Blocks Widget" works.  
For example:  I created 3 different Custom Post Types on my site (aside from the default "Posts"). In Categories, I also created a new category item called "Home Page Gk Blocks" and gave it a slug name of "home-page-cat".  In the GK New Blocks Widget data selector I chose "Category Slugs" and underneath wrote "home-page-cat".  I then choose 4 posts, 3 from the regular "Posts" and 1 from a Custom Post Type I created called "Women's Health Conditions".  I made sure that I assigned each post to the "Home Page Gk Blocks" category.  When I went to try this, only the posts that were in the default Posts container displayed.  The one in the custom post type "Women's Health Conditions" did not.  
Question:  How can I solve this, that I can place different posts from different custom post types into the GK News Blocks with your data selector.
I notice the selector has a custom post types as an option but i don't know how to use that.  Thanks,
j.
               
                
               
          