Change MQTT setting of a device

Configuration
1

I have SmartWingsHome cover (blinds) and I want to reverse the direction of the controls in HA.
Here is the current situation:

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If I press the “UP” button, the cover will go down (closing).
If I press the “DOWN” button, the cover will go up (opening).

I want to reverse that (UP=go up (opening) and DOWN=go down (closing).

After some searches, I found an old discussion which seems possible to achieve that. However, I can’t figure out what codes and where to put the YAML.

Further reading, that might be related to MQTT Cover platform, which now has new format.

Here is my cover device, entity_id is cover_first_floor as shown in the screenshot below.

I added this into the configuration.yaml:

mqtt:
  - cover:
      name: "cover_first_floor"
      payload_open: "CLOSE"
      payload_close: "OPEN"

But, that didn’t work. It created a new entity called “cover_first_floor2”. Instead of changing the settings of the existing entity cover_first_floor, it tried to create a new one.

So, is my understanding of MQTT Cover platform wrong that I can override device MQTT setting?
Can anyone help solving this?

image