Here's one possibility. The list box on the left is bound to a parameter and it is set up with multiselect = true. The list box on the right is bound to another parameter and it is set to multiselect = true also. When the user selects multiple items from the left list box, the bound parameter becomes a delimited list, such as "item1,item2,item3". If you set the bound parameter of the right list box to the bound parameter of the left list box (in code). Then all you need to do is to remove the items from the left list box (refresh the left list box and also the right list box) and I believe you should get what you are looking for. I hope I understood your question and provided a possible solution. 🙂
Thank You for the suggestion. Yes I am doing that but the problem I am having is when I Refresh as below I loose the parameter value set in the BR. I set the parameters in the Dashboard Extender BR and want to make use of the list in the Dashboard Datset in order to populate the ListBox. That comes up empty and am not sure why.
I'm wondering if the parameter would be available if you created a "supplied parameter" and referenced the parameter that is missing and placed the "supplied parameter" on the dashboard that contains the list. I may be missing something, but it almost sounds as if the parameter is not making its way back to the dashboard. Have to think about reasons it wouldn't have the parameter value after setting it in the BR.
