Woocommerce Product Subscription access 1_month_1 option

Question

I need help accessing the 2nd subscription option which is the 1_month_1.

First Subscription option has a value of 1_month - $40.00 / month — save 20%

Second Susbcription option has a value of 1_month_1 - $100.00 for 1 month

I tried the following codes for testing but no luck!

add_filter('wcsatt_single_product_subscription_option_data', 'sample_filter', 10, 5);
function sample_filter($option_data, $subscription_scheme, $product) {

    if($option_data[2][11] == '1_month_1')  {
        echo "Hello World!";
    }

    return $option_data;
}

I got the filter here