I need more than 32 choice in profile field

[Bulent Tekcan]

I need more than 32 choice in profile field (maybe I need 64).And I'm already find this line

if (sizeof($data) > 32 AND ($vbulletin->GPC['type'] == 'checkbox' OR $vbulletin->GPC['type'] == 'select_multiple'))

in /admincp/profilefield.php

1- This value (32) 3 times in this files,is it correct my modification way ?
2- İs it any problem in my database ? (load,db corrupt,or any other risk)

Thanks