In dragon ball Z budokai tenkaichi 2 how do you get super transformation

All super transformations cost blast stocks
For Sayains 3 blast stocks for Great Ape
Goku, Vegeta, Trunks etc 1 for SSJ 2 for SSJ2 and exclusively for goku 3 for SSJ3
SSJ=R3 (Right Analog stick)
SSJ2=Left and R3
SSj3= Up and R3
Normal= Down and R3