[TYPO3-english] tx_Formhanlder wrong redirection

[TSniper]

Hi,

I have created a formhandler subscription form, i have bilingue website DE/EN, in the english version everythings works fine but on German version DE, when i submit, i got redirected to the EN versin and the success message is also shown in english. I try to disable the realUrl and this resolve the problem. 
How can i make this working and realUrl enabled, is there any configuration for realUrl missing ?

Thanks in advance.