Force change from Uppercase AM/PM to Lowercase in Time Regional settings through GP

Hi... I would like to be able to modify group policy so that AM and PM in regional settings are lowercase by default for all users... is this possible?
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This code should do it

Source:  James Jithin]
public class Timeis {
    public static void main(String s[]) {
        long ts = 1022895271767L;
        SimpleDateFormat sdf = new SimpleDateFormat(" MMM d 'at' hh:mm a");
        // CREATE DateFormatSymbols WITH ALL SYMBOLS FROM (DEFAULT) Locale
        DateFormatSymbols symbols = new DateFormatSymbols(Locale.getDefault());
        symbols.setAmPmStrings(new String[] { "am", "pm" });
        String st = sdf.format(ts);
        System.out.println("time is " + st);

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David Johnson, CD, MVPOwnerCommented:
type over AM with am and PM with pm in the regional settings
user settings\preferences\control panel settings\regional options
David Johnson, CD, MVPOwnerCommented:
to see the results
do a gpupdate /force
taskkill /im explorer.exe

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vjstechAuthor Commented:
I type over regional settings in lowercase on the DC in Group Policy under User Configuration/Preferences/Control Panel Settings/Regional Options/Time and save them.  However when I go back into the regional settings the settings are showing in uppercase again... they do not stay in lowercase.
David Johnson, CD, MVPOwnerCommented:
did you press f5 to save the changes it will change from a red border to a green border
vjstechAuthor Commented:
Yes... pressed F5, changed from red to green.  Pressed on Apply, then OK.  However when I go back in, still changes back to uppercase AM and PM.
vjstechAuthor Commented:
F5 did work, thanks.  I have a couple of other problems.  

The location in the Regional Options tab under User Configuration is greyed out and set to United States - not sure if this can be changed.  I can force the User Locale to be English (Australia) however then the group policy update fails.  

When I have changed the AM and PM to lowercase it has affected the date settings in one of our internal applications... this may be a programming glitch on our part... just thought it was unusual that this would affect the date.
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