Doesn’t work

Looks like I’ve finally found the right plugin for creating my own header 🙂 But… for some reasons it doesn’t work with my Customizr Child theme. Could somebody help me?

1. I copied file “header.php” from Customizr and inserted it into Customizr Childe.
2. Then I replaced following piece of code

<header class="<?php echo implode( " ", apply_filters('tc_header_classes', array('tc-header' ,'clearfix', 'row-fluid') ) ) ?>" role="banner">
  			<?php
  				// The '__header' hook is used with the following callback functions (ordered by priorities) :
  				//CZR_header_main::$instance->tc_logo_title_display(), CZR_header_main::$instance->czr_fn_tagline_display(), CZR_header_main::$instance->czr_fn_navbar_display()
  				do_action( '__header' );
  			?>
  		</header>

with the next one:

<!--Header builder BEGIN-->
<?php do_action('stm_hb', array('header' => 'my-header')); ?>
<!--Header builder END-->

3. And I created the new header using Pearl Header Builder. But nothing changed: there is still default header on the website.
Where I’m wrong? Thanks