From 7026b00bfbe6b0d8063f5478d404e2ed5f1f6a61 Mon Sep 17 00:00:00 2001
From: rudolfkoenig <>
Date: Mon, 2 Sep 2019 07:10:12 +0000
Subject: [PATCH] 00_ZWDongle.pm: check for createNode parameter (Forum
 #103406)

git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@20092 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 FHEM/00_ZWDongle.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/FHEM/00_ZWDongle.pm b/FHEM/00_ZWDongle.pm
index 6cab4147e..2efc85845 100644
--- a/FHEM/00_ZWDongle.pm
+++ b/FHEM/00_ZWDongle.pm
@@ -355,6 +355,8 @@ ZWDongle_Set($@)
      $type =~ m/^createNode/ ||
      $type eq "sendNIF") {
 
+    return "Usage: $type <NODENAME_or_Number>" if(!defined($a[0]));
+
     $a[0] =~ s/^UNKNOWN_//;
 
     $a[0] = hex($defs{$a[0]}{nodeIdHex})