[Blu-Ray] Forced subtitles and preferred audio

Hi guys, When editing DVDs I used to add some command sequences to check the player preferred audio language and enable forced subtitles when needed, For example, when burning a multi language English + French movie, if I set my player to use French audio by default, it'll enable the forced subtitles (when they exist), So I'm trying to do the same thing on Blu-Ray with no success, here's what I did in BDEdit: I'm supposing SPR16 is the same "preferred audio" register as for DVD, I check if the value equals to what was the value for French language code "26226", if yes I set the audio to track 2 (French) and enable subtitles track 4 (French forced subtitles). But it's not working :/, can anyone help with this ? Thanks

Just tested something, When replacing ther condition : "if PSR16 == 26226 setstream ...." I put "if PSR16 > 1 setstream" and the forced sub was enabled, I guess the language values are just not the same as on DVD (?) By the way I don't know how to debug a blu-ray playback as on PGCEdit so I can't check, any ideas ?

Language code for French is 6713953, it's different from DVD. Also the if else condition (goto) works a bit different from DVD. To see the register values, currently sonic scenarist QC and the developer's version of powerDVD, windvd are available.

Thanks a lot It's working now :) I first didn't knew how to "code" the "if" so I created it on scenarist with a dummy project then copied it in my bluray files. Do you have any documentation with all or some of those languages values ? or any other doc that may help with manual bluray authoring :) ? I'll try to check those softwares, thanks again.