How can I change subtotal too?

Hello.
I want to add ERC20 token I made at MCC.
so I’m creating now woocommerce with another ERC20 which Already registered at MCC in practice.
I want to display only 1 token and checkout uses also 1 token only.

Then I already added Code Snippets.
https://mycryptocheckout.com/doc/snippets/display-the-woocommerce-cart-total-in-fiat-and-or-cryptocurrency/
But it changed only “total”.
I want to change Displaying the WooCommerce cart “subtotal” too.

how can I change subtotal too?