Using State API in Drupal Forms (Custom Conditional Fields)

<?php
/**
* Modifications for including State API functionalities. The idea is to hide the fields field_referme_industry 
* and  field_referme_major_skills, based on the value of another field. 
* The functionality can be implemented during the after_build phase
*/
function jc_form_alter(&$form, &$form_state, $form_id) {
  //drupal_set_message("Form Id is: $form_id "); 
  if($form_id == 'referme_node_form') {
    $form['field_referme_industry']['#after_build'] = array('jc_referme_ctc_after_build');
    $form['field_referme_major_skills']['#after_build'] = array('jc_referme_ctc_after_build');
  }
}

/**
* Hide the industry and Major Skills when CTC is mentioned as Fresher
*/
function jc_referme_ctc_after_build($form_entity, &$form_state) {
  $form_entity['#states'] = array(
      'invisible' => array(
      ':input[name="field_referme_current_ctc[und]"]' => array('value' => t('Fresher')),
      ),
    );
  return $form_entity;
}
?>

<?php
'#states' => array(
    'visible' => array(
        ':input[name="field_star_rating"]' => array(
            array('value' => t('5')),
            array('value' => t('4'))
        ),
    ),
),
?>