SAP C4C how to get Standard BO cache data when I create EC item which binding in this Standard BO

Hello everyone,

As my topic say,I bound a EC to Account ,when I create new EC item by QC,I want to get Account current country(at this point, it has not been saved to the database)

Process：Open a Account(old country code"CN")->change Account country(new country code"US")->create a EC item before save(I want to get "US" but not "CN")

I have tried the following two ways but I got the "CN" but not "US"

Wish someone can help me!

Thanks in advance!