Hyperic showing wrong heap memory reading for tomcat 7

Hello,

  I am new to hyperic HQ.I am using it now to monitor tomcat server7 with web application deployed on it.

Actually I am monitoring heap sized committed,used and deployed.I have purposely deployed application which creates OutOfHeap memory error.

When OutOfHeap error occurs,I took Heap dump and crossed checked heap memory free and used,But hyperic showing wrong results;

My machine details:

RAM:30g

I have set -Xms 512m,-Xmx1024m

heap dump after error:total heap-450mb

                                frre heap-13mb

but hyperic showing;

       heap committed;340mb

       heap used:35mb

       heap max:6g

here hyperic showing default heap setting,even i set -Xms 512m,-Xmx1024m

also it not showing my webApplication name/service name

Please answer my question or guide me