Fix a bug in FlowCheck

Change-Id: I430f2ca9bcab6a7519a15df7268882e45ce540a8
diff --git a/TestON/tests/CHOTestMonkey/dependencies/events/CheckEvent.py b/TestON/tests/CHOTestMonkey/dependencies/events/CheckEvent.py
index 6b0080f..8c85ff8 100755
--- a/TestON/tests/CHOTestMonkey/dependencies/events/CheckEvent.py
+++ b/TestON/tests/CHOTestMonkey/dependencies/events/CheckEvent.py
@@ -47,9 +47,9 @@
         import json
         checkResult = EventStates().PASS
         if main.enableIPv6:
-            coreFlowNum = main.params[ 'EVENT' ][ 'FlowCheck' ][ 'coreFlowNum6' ]
+            coreFlowNum = int( main.params[ 'EVENT' ][ 'FlowCheck' ][ 'coreFlowNum6' ] )
         else:
-            coreFlowNum = main.params[ 'EVENT' ][ 'FlowCheck' ][ 'coreFlowNum' ]
+            coreFlowNum = int( main.params[ 'EVENT' ][ 'FlowCheck' ][ 'coreFlowNum' ] )
         for controller in main.controllers:
             if controller.isUp():
                 with controller.CLILock: