ODT Font SIze Issue

[imran_lk2002]

I'm using jasper report tool and openning the report in ODT format. But when I open in RTF format it looks perfect.
I've 3 static text fields in my report.

(1). Text: Hello World ( In English, Times New Roman font)
Size: 6


(2). Text: ශ්‍රී ලංකා ( In Sinhala, iskolapotha font)
Size: 10

(3). Text: இலங்கை ( In Tamil, Latha font)
Size: 8

with the exact font size. But for ODF preiview the font appears correctly but not the font size except the "Hello World" , (i.e in Times New Roman )
Please help me to over come from this issue.

Thanks.
Regards
Imran