onAfterAdvance事件的event参数中有processControl,processControl中就是任务信息,获取sName的值参考

Model.prototype.processAfterAdvance = function(event){
	  var processControl = event.processControl;
		var toItems = processControl.getToItems();
		if (toItems) {
			for ( var i = 0; i < toItems.length; i++) {
				var item = toItems[i];
				var sName = item.getTaskRelationValue("sName");						
			}
		}
	};