Get Entity but can't fill in slot


I’m trying to extract entity from lookup table and fill the slots.

This is my domain file. The negative_feeling slot should get the entity value from Negative entity.

This is my nlu.yml. The entity should be extract by “feel_negative” intent, and search the lookup table for the entity value.

Most of the Negative entity can be extract and store in slots. For example: tired:


BUT!! grief

No matter how many time I tried, the entity can be extracted. But the slot can’t be filled!!

Can anyone tell me the reason for this situation?