Guild Wars 2

I’m trying to use a cannon in the pvp lobby area. The NPC said bring a cannonball to the cannon to load and fire it. I think I’ve loaded it (5 times) but there is still no fire option. What am I missing?

It is bugged. But you can use the cannon in the battleground Raid on the Capricorn.
The cannonballs are on the ship.

In your screen shot the canon is showing that it does not have ammunition. Other than that no idea.

When I approach the cannon I get the option to “Use” it. If I select Use it drops the cannonballs at my feet and shows the empty cannon skill bar. If I go around to the front of the cannon the cannonball dissappears and the number above the cannon’s health bar increments by 5 (in the picture its at 25), and I assumed that meant its loaded. I’ve only ever used the PvE cannon which requires no cannonballs, so maybe I’m loading it wrong, or its bugged?