Control Phillips Hue colors with Alexa Home V3

Hi Guys, I'm Marcus from Germany and I have a problem. I want to control my Phillips Hue via Node Red and Alexa Home V3. On, off and dimming is all possible, only if the colors are controlled, the lamp is dimmed. This means that a color with the Hue value 240 is output from the Alexa Home Node V3, but the saturation and brightness values ​​are always output with the value 1 from the Alexa Home Node, regardless of whether it is version V2 or the new one Version V3 is. Does anyone know how I can fix it with a function node or change node or whatever that the lamp changes color without dimming? Would appreciate help or flow how it works. I am a complete newbie and need help. Four thanks in advance. LG Marcus