When I import the following MMP in codewarrior 3.1 for symbian

{
TARGET MyApp.app
TARGETTYPE app
UID 0x100039CE 0x...

OPTION CW -include myPath\prefix.h
OPTION GCC -include myPath\prefix.h -fsigned-char

...
}

I obtain a MCP with 4 Settings Panel :
WINSCW UDEB
WINSCW UREL
THUMB UDEB
THUMB UREL

In project properties [Symbian Target/Aditionnal command line]
the result for [WINSCW UDEB] AND [WINSCW UREL] is
[-d _UNICODE -include myPath\prefix.h]
and for [THUMB UDEB] AND [THUMB UREL] is
[-D_UNICODE -include myPath\prefix.h -fsigned-char]

I want 4 differents Settings Panel as:
[WINSCW UDEB] = [-d _UNICODE -include myPath\prefix_UDEB.h]
[WINSCW UREL] = [-d _UNICODE -include myPath\prefix_UREL.h]
[THUMB UDEB] = [-D_UNICODE -include myPath\prefix_UDEB.h -fsigned-char]
[THUMB UREL] = [-D_UNICODE -include myPath\prefix_UREL.h -fsigned-char]

Unfortunately, I tried differents MMP without success

{
TARGET MyApp.app
TARGETTYPE app
UID 0x100039CE 0x...

#if defined(UDEB)
OPTION CW -include myPath\prefix_UDEB.h
OPTION GCC -include myPath\prefix_UDEB.h -fsigned-char
#else
OPTION CW -include myPath\prefix_UREL.h
OPTION GCC -include myPath\prefix_UREL.h -fsigned-char
#endif
...
}

or

{
TARGET MyApp.app
TARGETTYPE app
UID 0x100039CE 0x...

#if defined(_DEBUG)
OPTION CW -include myPath\prefix_UDEB.h
OPTION GCC -include myPath\prefix_UDEB.h -fsigned-char
#else
OPTION CW -include myPath\prefix_UREL.h
OPTION GCC -include myPath\prefix_UREL.h -fsigned-char
#endif
...
}

help me please
Sylvain