Need parameter.allowed_value.label to display user attribute value, but it's not working Help please

[Ben_Zitney]

I am setting up a parameter in a view and need the allowed_value label to display the values of a user attribute, similar to how you would display them for a field label. However, the user attribute value is not being injected in the same way it would be injected into a field label.

Here's a truncated example:

parameter: level_of_detail {
  type: unquoted
  label: "Product Attribute to Use"
  allowed_value: {
    label: "{{ _user_attributes['sku_attribute_01'] }}"
    value: "bsd.attribute_01"
  }
}

 When I do this, it does not inject the value of the user's sku_attribute_01 attribute value, instead it just displays the contents of the label as a string:

On the other hand, when I define a dimension field label in the same way ...

dimension: sku_attribute_01 {
  type: string
  label: "{{_user_attributes['sku_attribute_01']}}"
  sql: ${TABLE}.attribute_01 ;;
}

... the user attribute value is successfully injected into the label (in this case, the value of my user attribute is "1" for testing purposes):

So my question is why is this working in the field label parameter, but not in the label parameter for a parameter's allowed values?

Please let me know if you see anything I'm doing wrong, or if you know of any workarounds.