Detect change of hidden input

Detect change of hidden input

Hello

First, sorry for my poor level english

I have a the next code:

jQuery("#cambio").change(function () {
            SacarDatos();
         }).change();

Where

<input type="hidden" name="cambio" id="cambio">

In the code i chage the 'cambio' value with the next code (for example):

jQuery("#cambio").val(2);

But never execute SacarDatos().... the event 'chage' is only for select? i think no.

How can i do it?

Thanks