Filter On Custom Objects Not working on HTML5

I have developed a plugin using 6.0 SDK and deployed it to 6.5 VC which has both flex and HTML5 client.

I have used Comparator.TEXTUALLY_MATCHES in order to provide filtering custom object datagrid [list of chasis filter by name for example] based on sample ChassisRackVSphereDataAdapter

which is working fine when i deployed my plugin to 6.5 Flex.

However, for same binaries filtering is not working on HTML5 client.

Do i need to make some configuration changes or code changes in order to make the filtering functioning on both the client Flex/Html5 ?