Set select list option value

Question

I'm trying to set value of select list programmatically with hook form alter

I have select list with options:

$options = array(125 => 'USA');

and setting value like this

$form['field_news_rubrique']['und']['#options'] = $options

But this don't work.

if i change options like this

$options = array(0 => 'USA');

it's working

if i have multiple value in options like this :

$options = array(124=> 'EN', 125 => 'USA');

it's working too

Answer 1

Do you want to set the value before submission or after?

Before submission: Use $form and set the default value for the select list using the key.

After submission: Use $form_state['values']