How to pass liquid parameters to `date` fields filters?

[tumikosha]

How to pass liquid parameters to `date` fields filters?

I can pass parameter to string filters  like this 

  filters: [ date: "1 day ago"  ] 

but

  filter: dt_filter {
    type: date    
  }

  measure: sum_filt_by_dt {    
    type: sum
    filters: [ date: "{% date_end dt_filter %}"] #< --- Error here
    sql: ${age}   ;;
  }

throws 
 

Why it is possible  for string fields but not for dates?
This works fine for unquoted parameters:

  dimension: gender {
    type: string
    sql: ${TABLE}.gender ;;
  }

...
 filters: [ gender: "{% parameter gender_param %}"]

[otto]

You can add a yesno dimension that uses your dt_filter and then use that in the measure filters

dimension: dt_yesno {
  type: yesno
  sql: {% condition dt_filter %} your_date_field {% endcondition %} ;;
}

measure: sum_filt_by_dt {    
  type: sum
  filters: [ dt_yesno: "yes" ]
  sql: ${age}   ;;
}

I think why it works for you for the string fields is that you’re using a parameter there, which is a different thing than filter.