[Dygear]

Due to PHP (The programming language vB is written in) variable handling, no variable has to be cast to any datatype. Most of the user fields are strings anyway, and you can store arrays in strings by using the string serialize (mixed $value) function, and return it back to an array with the mixed unserialize (string $str) function.

But seeing as data casting was unknown to you, I would guess that your not a PHP programmer. So, this might seem hopelessly complex. I would love to help you further, but first I need to know what your trying to do.