Trigger Node-RED from a cover template in Home Assistant with Arguments

General
2

The solution is:

set_cover_position:
  service: nodered.trigger
  data_template:
  entity_id: switch.safe_set_cover_position_slowly
  payload:
    position: "{{position | int}}"
    currentposition: "{{ state_attr('cover.05_hal_1e_etage', 'current_position' ) | int }}"