Mark a category list item as current-cat when I′m on a page

I want to tell wordpress that when I am on the page “como-comprar-bienvenida” the category item “De Bienvenida”(slug=bienvenida) must be marked as current-cat.

this is my code:

<ul>
<?php
if  (!is_home()){
	$catsy = get_the_category();
	$myCat = $catsy[0]->cat_ID;
	$currentcategory = '&current_category='.$myCat;
	}
// this is what I can′′ get to work
elseif (is_page("como-comprar-bienvenida")) {
        $currentcategory = '&current_category=bienvenida';
 }
wp_list_categories('orderby=id&include=1,3&hide_empty=0&style=list&title_li='.$currentcategory);?>
</ul>
<ul>
<?php wp_list_categories('orderby=id&include=4,5&hide_empty=0&style=list&title_li='.$currentcategory); ?>
</ul>

This is teh URL for the “como-comprar-bienvenida” page where “De Bienvenida” must be marked:
https://k-i-t.com.ar/como-comprar-bienvenida

I can′t make it work, any ideas?
Thank you!!!