[TYPO3] powermail error message language

[Rupali Gupta]

Hello list

I have made a contact form using powermail extension under htttp://
serviceforce.duke2007.taunus.de/index.php?id=34. the main language for this
site is german. everything is working well, but i would like to know how to
change the language of this form to german so that the error message for
mandatory field come in german. (currently its in english)

i tried following but its not working for error message..
#powermail

powermailJS = PAGE
powermailJS {
    typeNum = 3131
    10 < plugin.tx_powermail_pi1
    10.plugin.tx_powermail_pi1{
    clear.session = {$plugin.powermail.clear.session}
    validate.uid9.required= 1
    validate.uid9.errormsg = Dies ist ein Pflichtfeld

}
    config {
        #disableAllHeaderCode = 1
        xhtml_cleaning = 0
        admPanel = 0
    }
}

Thx
-- 
Regards,
Rupali