Enter Bravo airspace in a VFR flight

Hello everybody

I would like to know how do I ask for clearance to transit Bravo airspace when flying a VFR flight plan with VoxAtc.

For example, I want to fly from Gainesville KGLE to Campbell Corsicana Mun KCRS, and I have to cross the Dallas Ftworth Class B airspace.

Before I enter B airspace the Menu options I have are to request a Position Fix and contact my destination. If I contact my destination the unicom tells me to enter downwind some rwy.

If my destination had been KDFW (Dallas Foxworth) then before enter the B airspace then i do have the chance to get the clearance and then i receive vectors and heights to land.

So, is there any chance to get a clearance to transit Bravo airspace in a VFR flight in VoxATC? Thanks