Thanks for your reply. However my requirement is to create an interdependent LOV i.e when I select a value in PopupLOV A, PopupLOV B will be populated. Else if I select a value in PopupLOV B , it will populate PopupLOV A.
The way it is mentioned in the link you gave, I tried it earlier, but I am not getting the desired result.
By the way I am using APex 4.2
Look at the problem here and the final solution: Set Cascading LOV Item using Dynamic Action
I think the technique described can be used to solve your requirement.
I'm with Scott, I would like to hear the use case scenario. This sounds interesting.