Register Sidebar

I am using the code below to register my sidebars and call them but it's not working.

/* Add Multiple sidebar
*/
if ( function_exists(‘register_sidebar’) ) {
$sidebar1 = array(
‘before_widget’ => ‘<div class=”widget %2$s”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<h2 class=”widgettitle”>’,
‘after_title’ => ‘</h2>’,
‘name’=>__( ‘My sidebar 1’, ‘textdomain’ ),
);
$sidebar2 = array(
‘before_widget’ => ‘<div class=”widget %2$s”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<h2 class=”widgettitle”>’,
‘after_title’ => ‘</h2>’,
‘name’=>__( ‘My sidebar 2’, ‘textdomain’ ),
);
$sidebar3 = array(
‘before_widget’ => ‘<div class=”widget %2$s”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<h2 class=”widgettitle”>’,
‘after_title’ => ‘</h2>’,
‘name’=>__( ‘My sidebar 3’, ‘textdomain’ ),
);
$sidebar4 = array(
‘before_widget’ => ‘<div class=”widget %2$s”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<h2 class=”widgettitle”>’,
‘after_title’ => ‘</h2>’,
‘name’=>__( ‘My sidebar 4’, ‘textdomain’ ),
);

register_sidebar($sidebar1);
register_sidebar($sidebar2);
register_sidebar($sidebar3);
register_sidebar($sidebar4);
}`

<?php if ( is_active_sidebar( 'My sidebar 1' ) ) { ?>
			    <ul id="sidebar">
			        <?php dynamic_sidebar('My sidebar 1'); ?>
			    </ul>
			<?php } ?>