Schedule helper with parameters?

[charred tendon]

Before I go down the rabbithole with template sensors, I would be interested in the schedule helper to turn on/off my heating, but at the same time to have the custom parameters that could tell me the temperature heating shall set on.

Is that possible with schedule helper, or I need another template sensor that will tell me temperature depending on the time-of-the-day?

It seems I can set the custom data as json format: {"temp":80} and when the schedule enters, I can read the value as a attribute. I get this:

editable: true
next_event: 2025-11-09T20:00:00+01:00
temp: 80
friendly_name: my_schedule