[exim] message_body in .forward

Hi list,

i have a little problem - i get mails, that look like something:

HANDLE: somestring.ABC

or

HANDLE: somestring.123

one of the lines in the body´s does always start with "HANDLE: " followed by some string and always followed by either ".ABC" or ".123"

Now I would like to sort all Mails that end on .ABC into file_ABC and all Mails that end on .123 into file_123.

Is this possible via a RegEx in .forward, e.G.:

if ($message_body contains "^HANDLE: *.123$") then
save file_123
elif ($message_body contains "^HANDLE: *.ABC$") then
save file_abc
finish
endif



?

Thanks and regards
Sascha