That's not even FL Studio 10, that's an older version...
I have 3 ways to make a dubstep wubwub effect, and in FL Studio, it never quite sounds right.
I can do the LFO in Sytrus, or from menu it pulls up from clicking on it, which is what I did here.
Or, I can pull up the piano roll, and make it play on a low tone, practically so low you can't hear it, and then use slide notes to make it rapidly transition from the note I want back down to the super low note, making wubwub sounds.
Either way they never sound right, so I can't even say if you actually used FL Studio or not. Which is not wise to give CnC and say the bass doesn't sound right if you've never tried it.
FL Studio is what I know and that is why I use it.