Problem with jquery.validate.js plugin selectors

Hi Guys, Im trying to do a client side form validation using the jquery.validate.js plugin.
This is what i tried.

Everything works perfect!
But since im programming under rails my html gets generated in way where the input tag looks like this,

If i change the name back to name="data" my rails functionality gets affected.
So i modified the script like this

Now im getting a javascript error. How can accomplish the validation without changing the name attribute of the input tag?
Apart from name is there anyother selector for which rules and messages can be set? Any takers ?

You need to use quotes around your element name because user[data] is saying store this in an array called user at index data.

Eric

Thanks Eric.
It worked!