how to retry an action in by-order mode

[chenk-gd]

There are multiple actions in a role and these actions are excuted in by-order mode. But sometimes the action may fail and need to be retried. Check the result of previous action in the _think method to see if it is succeeded. If not, set the todo variable to the previous action and increase rc.max_react_loop by 1? Is there a better way to do this?