Hello keskinoz! I apologize for the delayed response. You can use another scenario for your task: 1. Add an Independent DockPanel as described above. 2. Add new view controller. 3. In controller you should get target dock panel. You can get it from XafariDockingWindowController. In controller has properties: ActiveModelDockPanels, ActiveModelClassDockPanels, ActiveModelViewDockPanels that contain active dockpanels for example: var controller = this.Frame.GetController<XafariDockingWindowController>(); if (controller == null) return; var dockPanel = controller.ActiveModelClassDockPanels.First(x => ((ModelNode)x).Id == "Product_DockPanel_Independent"); In this code I get dock panel that was add in BOModel. 4. subscribe to the combobox event that occurs after the value change. 5. in event handler you should add new criteria to dockPanel dockPanel.Criteria = CriteriaOperator.Parse("[Firm.NameFirm] = ?", currentObject.Firm.NameFirm).ToString(); Feel free to contact us if you need further assistance or have additional questions. Regards, Mariya On behalf of Xafari Client Services Team |