Hi Sumit,
Have you tried specifying the bean-property in the same way you would specify an array in a method parameter for example? It should be something like:
<property bean-property="[testProp" display-name="Test Property" hidden="false" name="testProp" show-in-column="true" show-in-description="true"/> (yes, the name of the property prefixed with a '[')
Maybe that will be enough for simple types (strings, numbers and so).
I hope it helps.
Sergio