Previous earning: uplift ratio for work in another country

[googler]

There is one point in Tier 1 General guidance which is unclear for me:

" 132. The country in which the applicant has physically undertaken the work, rather than his/her nationality, the currency payment is made in or the country in which payment is made, determines the income band against
which we will assess the earnings. "

My company is based outside UK in country with uplift ratio for salary equal to 3.2 . However, I have worked recently in a project in a country with uplift ratio=5.3 ; I physically undertook the work in the mentioned country. My salary was paid in the currency of first country where my company is located.

The question is: Shall I use ratio 3.2 or 5.3 for previous earning calculation?

Thanks for your help and comments.