Work with another Environment in oracle Reports12c

I work with oracle middleware 12c (12.2.1.4)

I have a big system , some users work with arabic numbers and some users work with english

numbers, in rwserver.cong , so I have arabic users and english users.

so I created two environment AR & EN LIKE,

<environment id="AR">

   <envVariable name="REPORTS_TMP" value="C:\reports\tmp"/>

   <envVariable name="REPORTS_PATH" value="C:\Oracle\Middleware\reports\templates;C:\Oracle\Middleware\reports\printers;C:\reports;C:\Windows\Fonts;C:\reports\store37"/>

     <envVariable name="REPORTS_ARABIC_NUMERAL" value="HINDI"/>

  </environment>

  <environment id="EN">

 <envVariable name="REPORTS_TMP" value="C:\reports\tmp"/>

  <envVariable name="REPORTS_PATH" value="C:\Oracle\Middleware\reports\templates;C:\Oracle\Middleware\reports\printers;C:\reports;C:\Windows\Fonts;C:\reports\store37"/>