Topic: Mechanize Question

Hi, Im using mechanize and Im trying to get the values from a select by selecting another select.

<select name='maid' id='maid'><option value='1'>Made</option></select>
<select name='moid' id='moid'></select>

When I select an option from select 'maid' it makes an Ajax call and populate select 'moid'.
I already select the first select, but I cant get the values from second select.
How can I do that?