How do I change the direction of the Line of Sight cone?

I have a sprite that uses the Line of Sight behavior.

I want the Line of Sight 'cone' to be facing left, not right. I've tried using negative values for the cone size to see if that would change the direction, but it didn't.

I could easily mirror the sprite and set up a few events for that, but surely there's a simpler way to change the direction of the cone. If not, just say so and I'll do a workaround.

Thanks in advance!

I mean, the cone faces the direction of the object, so why not just rotate the object 180 degrees? You can do that both in the layout editor and through events.

I know that, that's not what my question was though. I'm asking if there's a simpler way.