Multiple paypal emails account

Hello,

How do I implement this code. I am interested in adding it to a product id
thanks in advance!

$paypal_args = apply_filters( 'woocommerce_paypal_args', $paypal_args );
// Hook in
add_filter( 'woocommerce_paypal_args' , 'custom_override_paypal_email' );

// Our hooked in function is passed via the filter!
function custom_override_paypal_email( $paypal_args ) {
	$paypal_args['business'] = 'info@ocweb.pro';
	print_r( $paypal_args['business'] );
	return $paypal_args;
}

http://wordpress.org/plugins/woocommerce/