Global search app content does not work

i installed Leanback app successfully and all video content and search from app works ideal, but i want use functionality of searching app content, but google assistant does not find any result from this app, i searched "New dad"

Start by reproducing the reported Google Assistant search for “New dad” in the Leanback app and inspect the app’s global-search integration. Done means Google Assistant returns matching video content from the app, while the existing in-app search continues to work.

Written by the indexing model from the issue text.