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