How do I require the players highscore on the Google Play?

Hello C2 community!

How I require ONLY the players's highscore on the Google Play Leaderboard with the C2's Google Play plugin?

I need only the value of the highscore player, not a table with the score of the other players, as a Top10.

I want my game compare the current score of the player with the score Google Play in the Game Over layout, and if the current score is higher, upload to Google Leaderboard.

The Coccoon plugin has this command, but unfortunately not found it on Google Play plugin.

Thank you in advance the attention and collaboration of all. ^^