Azure pipeline expand each parameter when using template

I have the following setup, a template file, and a pipeline that extends the template. I am wondering is it possible to dynamically add all parameters to extends' parameter?

Template.yml

parameters:
- name: Location
  type: string
  default: 'eastus'

Washington.yml

parameters:
- name: Location
  type: string
  default: 'westus'

extends:
  template: Template.yml
  parameters:
    Location: ${{ parameters.Location }} 

I can do something like this but I think it doesn't work because the shadowed parameters variable will be used instead of root level parameters.

parameters:
- name: Location
  type: string
  default: 'westus'

extends:
  template: Template.yml
  parameters:
  - ${{ each param in parameters }}
    ${{ param.Name  }}: ${{ param.Value }}

This works for me:

parameters:
- name: Location
  type: string
  default: 'westus'

extends:
  template: Template.yml
  parameters:
    ${{ each param in parameters }}:
      ${{ param.Key }}: ${{ param.Value }}

So you had small syntax issues.

It printed:

Assuming that template is:

parameters:
- name: Location
  type: string
  default: 'eastus'

steps:
- script: echo ${{ parameters.Location }}