Event on selecting a drop down list value in search guibb

Hi Experts,

I have a drop down in search guibb. I want an event to be triggered when the user is selecting any value from the drop down.

However, no standard events are triggered when we select the drop down value. I have even tried setting the  ES_OPTIONS-RAISE_EVENT_ON_ATTR_CHANGE parameter in the GET_DEFINITION method. However, no events are triggered when we select a drop down value.

Any suggestion on this would be of great help to me.

Thanks,

Ajith Cheruvally