[SAPUI5] uncheck checkbox if another one is selected

<Checkbox id="Checkbox1" selected="{ path:'oModel>CB1' }" select="handleOrderSelected"></Checkbox>	
<Checkbox id="Checkbox2" selected="{ path:'oModel>CB2' }" select="handleRejectSelected"></Checkbox>

	handleOrderSelected: function (oEvent) {
		//Wenn Checkbox1 selektiert, setze Checkbox2 auf false.
		var bSelected = oEvent.getParameter("selected");
		if (bSelected) {
			var bindingContext = oEvent.getSource().getBindingContext("oModel");
			this.oModelTemplate.setProperty("CB2", "", bindingContext, false);
		}
	},

	handleRejectSelected: function (oEvent) {
		//Wenn Checkbox2 selektiert, setze Checkbox1 auf false.
		var bSelected = oEvent.getParameter("selected");
		if (bSelected) {
			var bindingContext = oEvent.getSource().getBindingContext("oModel");
			this.oModelTemplate.setProperty("CB1", "", bindingContext, false);
		}
	}