[fix] operator error

src/broker/modules/subscription.go

@@ -187,7 +187,7 @@ func (manager *sub_manager) addSubscription(msg MsgUnit) error {
 		// For compound expressions bounded by '&&' and '||'
 		// (ex) { (234 < x) && (x <= 1293) } , { (234 < x) || ( x < 1293) }
 
-		logical_operator := operator[2]
+		logical_operator := operator[1]
 
 		// Find ValueNode = (namelist[name].list.val == Value)
 		valptr1 := nameptr.list.getValueNodePos([]int64{value[0]})