Alter The Portfolio Related Posts Heading

// Alter The Portfolio Related Posts Heading
function my_portfolio_related_heading_args( $args ) {

	// Show different text for items in category "design"
	if ( has_term( 'design', 'portfolio_category' ) ) {
		$args['content'] = 'Custom heading';
	}

	// Return args
	return $args;

}
add_filter( 'wpex_heading_portfolio_related', 'my_portfolio_related_heading_args' );