Form: unable to populate slot from utter_ask_*

I am playing with the form module. One challenge I have is collecting/populating slot. Below entities and slots are declared in domain as type unfeaturized I did the following in story.

**case 1 **:

  • intent 1
  • utter_ask_mbrName
  • inform{“mbrName”: “”}

case 2 (following the restaurant example):

  • intent 2
  • form: member_form
  • slot{“mbrName”:""}

case 3 (following the restaurant example):

  • intent 3
  • member_form
  • form{“name”: "member_form}
  • slot {“mbrName”, “”}

I checked the slotset after each case run. All three cases failed to populate the mbrName slot. Thanks a lot,