MostPopular Trailers (for a particular region) - v3 videos API

Is there an option to get the mostPopular Trailers (specific video category) for a particular region using the latest youtube v3 api ?

https://www.googleapis.com/youtube/v3/videos

I can use the chart=mostPopular and add a videoCategoryID, but looking at the videoCategory list call, the "trailer" category has a flag - assignable set to false.

Trying to use that id(44 in this case for US region) returns an error

GET https://www.googleapis.com/youtube/v3/videos?part=snippet&chart=mostPopular&regionCode=US&videoCategoryId=44&key={YOUR_API_KEY}

Response:

 "code": 400,
 "message": "The requested video chart is not supported or is not available."

Is there any workaround or another way to fetch the mostPopular trailers for a specific region using the last API's ?