Submit button (search icon) won't work

I have created another search form in my site, by copying the the html and php from the one I have, which works correctly.
But I have an issue with this new one, the search icon doesn’t submit on click to search the words.
I’ve only modified the class and id,
Do I make some mistake? or maybe is missing some php, that is some where in my theme? since I have changed classes.
This is the form code:
<form method=”get” action=”<?php print home_url();?>”>

<?php if( isset( $videotube[‘video_search’] ) && $videotube
[‘video_search’] == 1 ):?>
<input type=”hidden” name=”post_type” value=”video”><?php endif;?>
<input value=”<?php print get_search_query();?>” name=”s” type=”text” placeholder=”<?php _e(‘Search here…’,’mars’)?>” id=”search2″>
</form

I presume this should be a little thing, but I’m a newbie

Thanks for your help