Konsa Imran ab to mjhe bhi yaad nae 
Referring to this method in message @fastian04 The method is simple.
Just take empty can with you of 4L oil. Open drain nut and inner leveler tube. Let the oil drain in can. Measure it and add just 30-50ml more in new oil as compared to the drained quantity. Pour it inside.
The oil quantity that usually comes out after measuring is 2.1-2.2L.
Ask stealerships to shut up when they tell you that they will open pan. They cannot level cvt oil afterwards. My car was 800ml underfilled by toyota garden when they opened pan for the first time.