Rasa consecutive Buttons

Hello , Guys can you help me to implement consecutive Buttons in a story ? I did this :

  • story: Intro two steps:
    • intent: greet
    • action : utter_english
    • intent : deny
    • action : utter_level
    • action: utter_Sub_Platform

and utter level is a button , utter sub platform as well but the output was :
Buttons: 1: School (/services_schools) 2: Teacher (/services_teachers) 3: Student (/services_students) 4: International student (/services_international_students) Are you A : ? Choose a platform 2: Obetube (/obetube) the first Button was classifies as a text , just got to choose options from button two

thank you