Alexa integration for rgbw lights (flux_led) - Alexa changes wrong channel

Hi,

as a longtime openhab user i started using home assistant 3 days ago and at the moment im really happy with it, apart from some issues i have realizing functionality that were easy with openhab and i have no idea how to do it with homeassistant. One thing is the alexa integration of my wifiled (flux_led plugin).

They are working and i can control them (all channels) with the home assistant ui. Also the alexa integration is working - but changes the wrong channel. Alexa seems to control the intensity of the rgb part (helligkeit - brightness?), but want to let alexa control the weißwert (don’t know what this would be, maybe white value?).

Do you have any tips for me how i can realize it? Thought of adding the wifiled components 2 times, one time as rgbw and one time only as w, but don’t know if this can work, because the devices part is no array and so the ip address is unique and could not be added twice.

Please give me a hint how to let alexa control the w part of my rgbw flux_led light strips. Thank you a lot!