Validation based on another field's value

[eluser]Unknown[/eluser]
Hey CroNiX,

Thanks for the response! That seems to do the trick, but unfortunately it overwrites/ignores the other rules set in config/form_validation.php. It seems like I may to have to ditch the multidimensional array, which is a shame because I prefer to keep things organized that way. Unless anyone is aware of a way to add new rules to the config file through the controller?