locking levels until purchased inside game itself?

RawanAlodehRawanAlodeh Member Posts: 51
edited March 2015 in Working with GS (Mac)

hey guys.

i want to buy the pro version of gamesalad
but for now, im stuck at this thing

does anyone have any clue how to lock the other levels, lets say only levels from 1-20 are free and then inside the game itself, the user can pay the 0.99 and get the complete version of the game

is this possible?

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