Number Format Changing in DocVariable method

[afshin]

I defined some DocVariable for some date and numbers in my word file, my file is in Persian format.when i run vba macro to replace new numbers in place of defended DocVariable, number format that define in DocVariable changes to English. New number contents loaded from other Excel file by my word vba macro .
I want to all of numbers in my word file be in persian format or arabic.
problem is about changing space format in DocVariable. i define space format in DocVariable by persina mode(shown that in fa attached file )but when closing that file and opening again,that space format changes to englis format(shown that in en attached file).