Externalize parameters description in Argo Workflows

Question

is there a way to fetch a description from a yaml file and add it to parameters description in Argo Workflow? Example with the help of helm:

  arguments:
    parameters:
    - name: param-name
      description: 
      {{ .Files.Get "files/some-description.yaml" | indent 10 }}
      value: 0

In this case it doesn't work, but is working when I want to add some script inside a container, which is in external file

    command:
      - bash
    source: |
   {{ .Files.Get "files/some-script.sh" | indent 10 }}

The other concern is how to get a specific line from yaml, assuming that yaml contains all used descriptions for all workflows, which would look like this:

description1:
  "some description 1"
description2:
  "some description 2"

Is something like this possible in Argo?

thanx