change mode headings' names?

[ignacio82]

Is it possible to change the mode headings' names? My card looks like this:

and this is the code i have for it:

type: custom:simple-thermostat
entity: climate.first_floor_hallway
layout:
  step: row
  mode:
    names: true
    icons: true
    headings: true
header: false
control:
  - hvac
  - fan
  - preset
sensors:
  - attribute: fan_modes
    name: Fan

I tried using sensors: to rename the heading for the fan, but it did not work. Thanks for the help.