geo zone to country checker

All I need is an “if statement” to match the geo_zone_id with the country chosen by the client during checkout in order to add a multiplier. Below is a more detailed explanation: I need to add a multiplier to the shipping price based on the geo zone. Each geo zone has a set of countries which has been already set. I managed to add the multiplication to the shipping but it is being worked on all countries no matter in which geo zone they are. I need to get the correct “if statement” to make the geo_zone_id match with the customer selected country during the checkout. For example: Client A is making an order and he is from france, france is in geo zone 3, thus shipping price will be multiplied by for ex: 1.5 Client b is making an order and he is from Russia, Russia is in geo zone 5, thus the shipping price will be multiplied by for ex: 2 I have a total of 15 zones, the page that has to be edited is [login to view URL] everything has to be in this page as this is the default shipping page. the multiplication piece of the statement is ready.