Kindly post picture of car and sticker under the bonnet you mentioned. If its a VY11 chassis, that car come with 4 speed automatic transmission not with the CVT. It should take Dexron III fluid for transmission. If your car is of new shape AD van (VY12) than that car comes with both 4 speed automatic and CVT transmissions.
For transmission oil quantity on a VY11, If you just drain the oil from the drain bolt under the gearbox, it will take 3.5 liters but if you drain the oil from cooler line it will take approximately 7 liters to replace all fluid. Kindly also post the transmission code written on VIN plate under the bonnet normally called "Tikli" in desi terms.