Thank you ,defused.
I want to customize carrier shipping cost .
I made EMS carrier in Carrier->Shipping, but this carrier doesn't correspond to the update.
I think of getting EMS using the API , and handling with the carrier.
So, I wanted to know these variable to need displaying EMS API.
1->Sends the total amount and the country ID, and to get the shipping cost from the EMS API
2-> Substitute the obtained this shipping cost on these variable
3->Total shipping(tax incl.)←Display this shipping cost from API
4->To be displayed in the order screen
This is the ultimate goal!!
Please help me,Thank you.