Sphere ranged-air ability...

I was wondering if the Sphere ability automatically allows the equipped unit a ranged attack versus air units? I can't seem the find the toggle option anywhere in the custom data. If it does, how can I turn it off, and if it doesn't, how can I turn it on?

As far as I know, there's nothing like that... the only thing that allows units to attack ranged unit would be the different Orb abilities. If that's what you're talking about, than I'm pretty sure the closest thing you can do to disabling it is just to set the target of "item attack bonus *whatever*" to not target air, however, that's not really effective because then if the unit can normally attack air, the bonus effect doesn't take into effect (I think).
... ... I hope I didn't just really confuse you... in short, no, there's no really good way that I know of.

just base it of a non-orb item and make the item give the orb buff and icon. like make a new item based off of serethil and make it look like an orb. noone will ever notice!