admin notification not showing up when save plugin options

Hi,

I’ve created a new options page called MSP Settings in my plugin. Everything saves fine, but, I don’t get the admin notification at the top of the option page that tells me “Options Saved”. If my validation function fails it also doesn’t display a “Saved failed” notification. Is this notification something I have to build in manually or its supported out of the box for options pages?

I am running WordPress on a Windows local machine.

My plugin code is below:

function msp_general_options_page() {
	?>

		 <div class="wrap">
			<?php screen_icon(); ?>
			<h2><?php _e( 'MSP UltimatePlugin', 'msp-ult' ); ?></h2>
			<p><?php _e( 'This is an options page you can use to control settings in your MSP website. Example, configure services, products, etc.' ); ?></p>
			<form method="POST" action="options.php">
				<?php
					settings_fields( 'msp_general_settings' );
				?>
				<table class="form-table">
					<?php msp_general_do_options(); ?>
				</table>
				<input type="submit" class="button-primary" value="<?php _e( 'Save Options', 'msp-ult'); ?>" />
				<input type="hidden" name="msp-general-options-submit" value="Y" />
			</form>
		</div>

	<?php
 }

 function create_msp_menus() {
	add_menu_page( __( 'MSP Settings', 'msp-ult'  ), __( 'MSP Settings', 'msp-ult'  ), 'manage_options', 'msp_general_options', 'msp_general_options_page' );
	add_submenu_page( 'msp_general_options', __( 'General Options', 'msp-ult'  ), __( 'General Options' , 'msp-ult' ), 'manage_options', 'msp_general_options' );

 }
 add_action( 'admin_menu', 'create_msp_menus');

 function msp_pluginsettings_init() {
	register_setting( 'msp_general_settings', 'msp_general_options', 'msp_validate_general_settings');
	/* register addditional settings here */
 }
 add_action( 'admin_init', 'msp_pluginsettings_init' );

 function msp_general_do_options() {

	$options = get_option( 'msp_general_options' );
	?>
		<tr valign="top"><th scope="row"><?php _e( 'MSP API Token','msp-ult' ); ?></th>
			<td>
				<?php
					if ( $options['msp-api-token'] ) {
						$options['msp-api-token'] = wp_kses( $options['msp-api-token'] );
					} else {
						$options['msp-api-token'] = _( '' );
					}
				?>

				<input type="text" id="msp-api-token" name="msp_general_options[msp-api-token]" width="300" value="<?php echo $options['msp-api-token']; ?>" /><br/>
				<label class="description" for="msp_general_options[msp-api-token]"><?php _e( 'A key to authenticate that the WordPress site using this plugin has permission to do so.' )?></label>
			</td>
		</tr>
	<?php
}

function msp_validate_general_settings( $input ){
	if( ! is_numeric( $input['msp-api-token'] ) ) {
		$input = null;
	}
	return $input;
}

Thank you,

Tin