[NTG-context] randomize

Hallo, I get allways (10 times at least) the same result: ------------------------------------------------------------- \starttext \startluacode math.randomseed(os.time()) \stopluacode Encode your Name and Surname as a \startluacode local a = {'null-terminated', 'dollar-terminated', 'Pascal'} context('%s string', a[math.random(1,3)]) \stopluacode \stoptext ------------------------------------------------------------- How can I randomize this? Wolfgang