# Why doesn't this slot\_mapping work? **URL:** \ **Category:** Rasa Open Source\ **Created:** [June 27, 2019, 3:41am UTC](https://forum.rasa.com/t/why-doesnt-this-slot-mapping-work/12142 "2019-06-27T03:41:29Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![twittmin](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/twittmin/32/2091_2.png) [@twittmin](https://forum.rasa.com/u/twittmin)\ **Post date:** [June 28, 2019, 1:36pm UTC](https://forum.rasa.com/t/why-doesnt-this-slot-mapping-work/12142/5 "2019-06-28T13:36:29Z")
Yes. Thank you, @JulianGerhard. Could you also take a look at my other question regarding “forgetting” entity history for each new utterance? > [@How to not remember entities in history?](http://forum.rasa.com/t/how-to-not-remember-entities-in-history/12179): > > In one of my cases, I don’t want the tracker to remember any entities. For each new utterance, I want to only use newly extracted entities and slots. I remember somewhere I read it and there is a way to configure that, through domain or configuration file. Is there an actual way to do that? Do you have experience in dealing with this situation? It seems a common need. Thank you. --- _[View the full topic](https://forum.rasa.com/t/why-doesnt-this-slot-mapping-work/12142)._