Turn on or off a group

Hi, struggling a bit with the correct way to turn on or off a group in node red.

I created a group in in home assistant, switchin on or of a group of 3 entities. works well. I now wnat to call 1 service node and turn on or off that group.

the domain “group” doesn’t really let me easily do this:

This is the state of the group:
image

I would expect something like turn on of off but since a group can have different states according to:

I think I need to use the data field but I do not find any guidance on how to fill that.

Any help appreciated!

Solution found:

hint was in: