Dynamic Reference of Parameter Map

[pricter]

I have the following calc in a query item
if ( [Value] > 10 ) then 'High'
     else 'Low'.
My environment is Multilingual.
So I would like the strings High and Low to change base on user language.

I have created two parameter maps.
Then one has the English string and the other the french ones.
For Example
Strings_fr
Strings_en

How can I refer to the relevant parameter map?