Help using filters with todo list

Configuration
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1

I am trying to create a list of todo items that are due tomorrow or earlier, to be displayed with a markdown card In the template file when I hard code the date for the filter, it works. Doesn’t work when I substitute 2024-10-02 with the variable tdate. Thank you for any help

- trigger:
    - platform: state
      entity_id: todo.to_do_list
  action:
    - service: todo.get_items
      data:
        status: needs_action
      target:
        entity_id: todo.to_do_list
      response_variable: my_list
  sensor:
    - name: My To Do List Items
      unique_id: my_todo_list_items
      state: "{{ now().isoformat() }}"
      attributes: 
        todo_items: >
          {% set tdate = (now().date()) + timedelta(days=1) %}
          {{ my_list['todo.to_do_list']['items'] 
                    | selectattr('due','defined')
                    | selectattr('due','lt','2024-10-02')
                    | map(attribute='summary')  
                    | list }}
2

The attribute due is a string, you need to convert tdate to a string.

3

That was it, thank you!

          {% set tdate = ((now().date()) + timedelta(days=1)) | string %}