[exim] if match question

Hello again.

I have this
logwrite = ${if match{$h_date:}{/Mon|Tue|Wed|Thu|Fri|Sat|Sun/}
{match}{notmatch}}

Then the message have Date: Mon, 24 Aug 2009 12:25:59 +0400

In exim log a got notmatch, why? regular expression is valid (tested
with pcretest)...

--
Vasiliy G Tolstov <v.tolstov@???>
Selfip.Ru