How to copy attributes to another entity

Hi (again),

i have a lot of “grouped” lights in my rooms. e.g. three lights above my diningtable. So when i change a attribute from one (normally i define a “master”) i want every other to change to.

So as a trigger i need a “if brightness or color changes” (no Problem). Than “change the brightness and color from the other devices too” (no problem). And copy the brightness and color from the Master. (thats the point).

Any ideas?

Kind regards,

Create a group that includes them all,

Then operate the group instead of the single entity

Thank you!!

Hm - i change the values with alexa. Is it possible to make Alex think a group is just one Device?

Maybe this blueprint can help you: