CPT custom has not option read others book?

I want the user only to view in the admin area his own posts (CPT) in this case, the CPT I created is "uploads"
I set as custom, and set the prefernces in the wp members plugin.
But I don't see the option read_others_book (read_others_upload)

[edit_post] => 'edit_book'
[read_post] => 'read_book'
[delete_post] => 'delete_book'

// Primitive capabilities used outside of map_meta_cap():

[edit_posts] => 'edit_books'
[edit_others_posts] => 'edit_others_books'
[publish_posts] => 'publish_books'
[read_private_posts] => 'read_private_books'

// Primitive capabilities used within map_meta_cap():
(...)