dynamic lists error when substituted into entity_id | Home Assistant | Page 1

Hey guys! Im running into a brick wall with my HA system
One of my design philosophies with my home automation is that it needs to be movable, i.e. everything needs to be able to be moved around and reset on a dime as i am currently moving alot from place to place. to do this i have found the blueprints tool which is very cool! im only running into one problem with it. while designing a script for light dimming, namely:

alias: lightDimmer
description: Script to dim lights dynamically
icon: mdi:remote

fields:
  lights:
    name: Lights
    description: The lights controlled by this script
    required: true
    selector:
      entity:
        domain: light
        multiple: true
  incrementrate:
    name: Dimmer Step Rate
    description: Rate to adjust brightness by (%)
    required: true
    selector:
      number:
        min: -100
        max: 100

sequence:
  - service: light.turn_on
    target:
      entity_id: "{{ lights }}"
    data:
      brightness_step_pct: "{{ incrementrate }}"
mode: single

It spits a hashing error. is this just a thing which means i cant dynamically set an array for a room of lights in a script? does it need to be hard coded?

#dynamic lists error when substituted into entity_id