Problems with switch

Hello
hopefully somebody can help me

in the following code:

Function SetLanguageDependedKey

    ${switch} $LANGUAGE

    ${case} ${LANG_GERMAN}     

    	WriteRegDWORD HKEY_CURRENT_USER "${REGKEY}" "lang" 0x1

        WriteRegDWORD HKEY_CURRENT_USER "${REGKEY}" "faml" 0x1

        Call InstallReg_GCFPart_German

    ${Break}

    ${default}     ...

       WriteRegDWORD HKEY_CURRENT_USER "${REGKEY}" "lang" 0x0

       WriteRegDWORD HKEY_CURRENT_USER "${REGKEY}" "faml" 0x0

    ${Break}

    ${EndSwitch}

FunctionEnd

I get the error:

warning: unknown variable/constant "{LANG_GERMAN}" detected, ignoring (macro:_==:1)

What I'm doing wrong?
This function is in a .nsh file, if i put it in my main file
then there is no error😕
what i'm doing wrong?

Hi
I already found out what the problem was

i included the .nsh file bevor defining the language
:-(

now it works