Ubermenu Manual Integration

I have recently bought Ubermenu responsive mega menu plugin from codecanyon. But after doing basic RnD, I got to know, to make it work with PP, I need to do the manual integration.

I got the php code which needs to insert in header.php file. here is the code:

[code title=”ubermenu manual int code”]

<?php ubermenu( ‘main’ , array( ‘theme_location’ => ‘top-navbar’ ) ); ?>

[/code]

if I try to insert it directly in theme options > Design set up > custom meta data > header styles (wp_head) section, it doesn’t work out.

how can I make this manual integration successful? Please help