Changing the age requirement of registrant?

[Mr H]

Is it possible to change the minimum age from 13 to 18?

[Xenon]

in register.php
find:$coppadate=vbdate($dateformat,mktime(0,0,0,da te("m"),date("d"),date("Y")-13));

just change the 13 ^^

[Mr H]

Thanks :)