Transfer of my BAT token to Uphold

I have verified uphold account browser. How do i transfer my BAT token from Brave browser to uphold. I have 4 BAT token in my Brave account.
Kindly advice.

@rajthe14 withdrawal functionality is in the works. Will hit Release channel soon. See Brave Rewards : User Wallets - A significant update


I already use Brave Nightly, which is supposed to have the withdrawal feature, but it still does not work for me.