I’m trying to implement report parameter pane in preview using LL20, Visual C++ and “Designer Preview and Drilldown” project as an example. Till now everything is working except one thing. While re-rendering a report with new selected parameters within LL_NTFY_VIEWERDRILLDOWN handler the parameter selection is getting lost and I have a first value selected in parameter combobox. (I’m using a parameter based on data source values). Does anybody know, is there an option or an API call that causes this effect?