Add "Columns" Component in Data Property

[Nastiapom]

Hi, I'm trying to implement the Data Property with the "Columns" Component that contains measures and dimensions.
Like what is in this photo:

But I could only figure out how to visualize the dropdown button without measures and dimensions because this part is not documented.

This is the code I arrived at:

[alex_colombo]

Hi @Nastiapom , are you trying to have this box that show you if you want to add a column as dimension or measure?

[Nastiapom]

Hi @alex_colombo ! Thank you for the replay.
I can dislpay the box and the options like in this capture: 

But when I click in any field, nothing happens.
My problem is that I can't visualize the data (list of fields after selection).
Like here:

I only have the button without fileds.

Thank you