From b1bc4f4b8b2281a3f66c1a833ee17e27cb95d430 Mon Sep 17 00:00:00 2001
From: justme1968 <justme1968@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Fri, 28 Nov 2014 10:18:07 +0000
Subject: [PATCH] 33_readingsGroup.pm: fix for valueFormat and headings

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@7078 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/33_readingsGroup.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fhem/FHEM/33_readingsGroup.pm b/fhem/FHEM/33_readingsGroup.pm
index 740858034..8b182c608 100644
--- a/fhem/FHEM/33_readingsGroup.pm
+++ b/fhem/FHEM/33_readingsGroup.pm
@@ -490,7 +490,7 @@ readingsGroup_2html($)
           next if( !defined($txt) );
         }
 
-        my $value_format = lookup2($hash->{helper}{valueFormat},$name,$1,undef);
+        my $value_format = lookup2($hash->{helper}{valueFormat},$name,$1,"");
         next if( !defined($value_format) );
         if(  $value_format =~ m/%/ ) {
           $txt = sprintf( $value_format, $txt );