Grav not saving custom fields

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1

Since im new to GRAV, i might be the error here, that said here is my issue:

I created two supplemental fields that extends the default page view in my theme, but when i save the post the custom fields data is not getting saved.

i can give you the code I wrote for the blueprint.

title: Landing
'@extends':
  type: default
  context: blueprints://pages

form:
  fields:

    tabs:
      type: tabs
      active: 1

      fields:
        content:
          type: tab
          title: Landing setup 
          fields:
            landing.head:
                type: text
                autofocus: true
                style: vertical
                label: Landing title

            landing.keyphrase:
                type: markdown
                autofocus: true
                style: vertical
                label: Call to action key

Could you help, I am getting no errors at all.

2

found the solution thanks to @MatthiasLenz