Custom drill down involving table calculations

[andre-165893225]

Hi

I am attempting to create a custom view when drilling into a value in my dashboard, however, despite defining a table calculation, and in theory passing it into the url, only the variables specified in the "drill_fields" argument appear. Any ideas what I could be missing? Any help would be much appreciated!

measure: bias_2_5_pct {
    type: percentile
    percentile: 2.5
    sql: ${bias} ;;
    value_format_name: percent_1
    drill_fields: [name, bias]
    link: {
      label: "Custom drill down"
      url: "
        {% assign table_calc = '
          {
            \"table_calculation\": \"25pct\",
            \"label\": \"25pct\",
            \"expression\": \"percentile(${view.bias}, 0.025)\",
            \"value_format\": null,
            \"value_format_name\": \null,
            \"_kind_hint\": \"dimension\",
            \"_type_hint\": \"number\"
          }' %}
        {% assign vis_config = '{
            \"type\": \"table\",
            \"show_view_names\": false,
            \"show_row_numbers\": false,
            \"truncate_column_names\": false,
            \"table_theme\": \"gray\",
            \"enable_conditional_formatting\": false}' %}
        {{ link }}&dynamic_fields={{ table_calc | encode_uri }}&vis_config={{ vis_config | encode_uri }}&toggle=dat,pik,vis&limit=5000"
    }
  }