Hi Evita,

Thanks for replying.

Actually I have one tab in one section and I want to apply visible when condition on another section which should be visible when first tab is clicked and it is not in any tab. I applied an event action in the tab to set value of a property to "abc" which is followed by a when rule which checks wether the property is "abc" or not and then I apply this when condition in visible when condition for the section. but its not working could u tell what could be  the problem