TeamCity: copy NUnit AddIn - attempt #2

Author: hazzik

teamcity.build

@@ -15,10 +15,10 @@
 	<target name="clean-configure-test" depends="cleanall init copy-nunitaddin copy-teamcity-configuration binaries test verify-test-results binaries-zip" />
 
 	<target name="copy-nunitaddin" depends="init">
-		<if test="${property::exists('teamcity.dotnet.nunitaddin')}">
+		<if test="${property::exists('system.teamcity.dotnet.nunitaddin')}">
 			<copy todir="${tools.dir}/NUnit/addins">
 				<fileset>
-					<include name="{teamcity.dotnet.nunitaddin}-2.6.1.*/**" />
+					<include name="{system.teamcity.dotnet.nunitaddin}-2.6.1.*/**" />
 				</fileset>
 			</copy>
 		</if>