NI report with Cyrillic text

Hi all,

I need to produce a pdf report with Russian text.
As you can see in the code, I using the "NIReport_SetTextAttribute"command for transliterate the charset to russian.
if I set the system language to Russian I can type Russian characters in to pdf, there is no error.
But when I change the system language ( exp:to English),there is not any characters in to pdf.
How can I solve this problem?