(Diolauge tree) How to show a charecters picture and info

Hi everybody! I have just discovered the Dialog tree and how I can edit it in GDevelop. I just wanted to know how to show the player picture when talking to another character or the other characters picture when they say something. Anybody know how to?

Use a command in the dialogue tree .json file like

<< avatar >>
Then in your event load the command

The json file