formulas.extractKey=function(obj,key){
            for(key1 in obj){
                if(key1==key){
                    return obj[key1];
                }
                if(_.isObject(obj[key1])){
                    var val=formulas.extractKey(obj[key1],key);
                    if(val!=null) return val;
                }
            }
            return null;
        };