How to fetch or link to Live exchage rate of currency

[#1]

Hello  all,

          I am using qlikview v 11.20. i have created master calender it's working fine

but now i want to fetch or get  live  currency exchange rate .

     For example if user select specific year or month i should get avg exchange rate for that year and month.

          So pls help me in this.

Thank U in advance.