Ext多选框动态改变选中

{
			            	xtype: "panel", 
				            layout: 'column',
			            	columnWidth: .33,
				            items: [{
				            	xtype: "panel", 
				            	layout : "form",  
			           			columnWidth: .5,
			            		items: [{
				            			xtype : 'checkbox',
										name: 'memberSettleAccount.payCash',
										id: 'memberSettleAccount.payCash',
										boxLabel : "",
									　　 inputValue : "1",
				            			anchor: '50%',
				            			listeners : { 
				            				"check" : function(obj,ischecked){
				            					var paySlotCard = Ext.getCmp('memberSettleAccount.paySlotCard');
				            					var payPos = Ext.getCmp('memberSettleAccount.payPos');
				            					paySlotCard.setValue(false);
				            					payPos.setValue(false);
				            				}
				            			}
			            		}]
			            	 },{
				            	xtype: "panel", 
				            	layout : "form",  
				            	columnWidth: .5,
			            		items: [{
			            			xtype : 'textfield',
			            			fieldLabel: '现金',
			            			name: 'memberSettleAccount.cashMoney',
			            			anchor: '100%'
			            		}]
				            }]
			        	 },