Remove high price in variable pricing display

Hi, I just want to show the lowest price, I have seen on many sites to use the below code, but all these sources are nearly a year old and the code doesn’t work for me… have tried placing in functions and the woocomemerce config file, any other ideas?

add_filter('woocommerce_variable_price_html', 'custom_variation_price', 10, 2);

function custom_variation_price( $price, $product ) {

	$price = '';

	if ( !$product->min_variation_price ||
              $product->min_variation_price !== $product->max_variation_price ) {
		$price .= '<span class="from">' . _x('From', 'min_price', 'woocommerce') . ' </span>';
		$price .= woocommerce_price($product->get_price());
	}

	return $price;
}

https://wordpress.org/plugins/woocommerce/