Registering multiple menues in header – both show same content

I created two menues in my header.php file for my theme. They are registered in the functions.php file.

If I now open the page, both menues are filled with the same content – even tough I made a different menue for each position.

header.php :

<div class="menuleft">
                            
<nav>
<?php wp_nav_menu( array( 'menu'=>'hauptnavigation', 'menu_class'=>'mainnav', 'container'=>'nav') ); ?>
</nav>

</div>
<div class="menucenter, col-33">
<nav>
<?php wp_nav_menu( array( 'menu'=>'hauptnavi2', 'menu_class'=>'mainnav', 'container'=>'nav') ); ?>
</nav>
</div>

functions.php :

function register_menus(){
register_nav_menus( array(
  'hauptnavigation' => 'Hauptnavigation' ,
  'hauptnavi2' => 'HauptnavigationFolge'
));}
add_action( 'init', 'register_menus');

What could the problem be?

Thank you for your help, I guess I just made a stupid fault and can’t see it after hours of trying.