Hi Camilo,
Actually, you are setting the field in opposite. The correct pattern should be:
'value1' => 'Label 1',
'value2' => 'Label 2'
(It's the 'value' => 'Label'
, not 'key' => 'value'
).
And the helper function returns the values, not labels.
You can get the labels, you can do this:
$field = rwmb_get_field_settings( 'field_id' );
$options = $field['options'];
// Get all labels.
$values = rwmb_meta( 'field_id' );
$labels = array_map( function( $value ) use ( $options ) {
return $options[$value];
}, $values );
// Output labels.
foreach ( $labels as $label ) {
echo $label;
}