Custom application deployment in multiple language

Hi,

I'm looking for deploying an application in many languages.
I've got one .msi per language.

Then I created an application with one deployment type per language (fr, en, etc...)

If I try to install the app on the client computer, it always use the default language version I checked on my package, it cannot detect automatically the OS language of the computer..

The only idea I had, is to check on the client's registry which is the language key, and add it to the detection method of my deployments...

Is this the best way ?

Thank you