Philips Light Temperature over MQTT

Hi there,
I have a philips being lamp which is controlled with mqtt. When I try to set the light temperature it try to do this with lightmode. But the light isn’t changing.

Any ideas how to change to light_temperature instead? Since it’s set with this attribute.

So I have the Control which mqtt messages are sent?

Im just startet with home Assistant and try to connect my devices via MQTT from a Homey.

Greetings