error starting soapui-pro.bat

When I tried to run \soapui-pro-3.6.1\bin>soapui-pro.bat on Window,
I got this error message:

JAVA_HOME is not set, unexpected results may occur.
Set JAVA_HOME to the directory of your local JDK to avoid this message.

I have this my environment variables:
Path C:\oracle\ora92\bin\;C:\Program Files\Oracle\jre\1.3.1\bin\;C:\Program Files\Oracle\jre\1.1.8\bin\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Diskeeper Corporation\Diskeeper\;C:\oracle\product\10.2.0\client_1\BIN\;nflictSolver;C:\Program Files\Attachmate\RSecure\;C:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\Program Files\Java\jdk1.6.0_22\bin;C:\Program Files\Java\jre6\bin;

JAVA_HOME C:\Program Files\Java\jdk1.6.0_22\bin