Forms :: How To Use Some Fields Of Form In Arabic

i want to use Arabic language in one of the fields available on the form.

i alreade have done the following

1. On database

update PROPS$
set value$ ='AR8MSWIN1256'
where name = 'NLS_CHARACTERSET';

2. On system registry

Have changed all nls_lang variable in the registry to 'American_America.AR8MSWIN1256'

3. On Form

Have changed the field font to 'Simplified Arabic' and reading order 'right to left'

4. On Operating System

Change the region and language setting
format 'Arabic (saudi Arabia)'
keyboard and languages add 'Arabic (saudi arabia)'

5. have restarted the database on the server and also the client machine.