How to upgrade Delta flight with Velocity Points?

Hello All,

I’m flying Sydney-Atlanta under DL flight number. I’m a Velocity Gold FF. What’s the best way to apply for an upgrade using my Velocity points?

Thanks.

upgrades on long haul seem to be only possible with a VA flight number. https://www.velocityfrequentflyer.com/content/Redeem/FlightUpgrades/upgrademe-points/#longhaul

Thanks Mark.