The following code allows you to upload multiple images but only one is saved to the option. Can multiple images be saved to the option as an array or would I have to create separate controls?

$wp_customize->add_section("slider",array(
    'title'=>"Slider",
    'description'=>"Choose the images for the slider",
    'priority'=>'36'
));

//images
$wp_customize->add_setting("slider[images]",array(
    'default'=>"",
    'type'=>"option"
));
$wp_customize->add_control(new WP_Customize_Image_Control($wp_customize,"slider[images]",array(
    'label'=>__("Images","adaptive-framework"),
    'section'=>"slider",
    'settings'=>"slider[images]"
)));