BlockScan chat app - how to set a nickname?

hello there so to set a nickname in a blog scan chat so for example here if i already have a new conversation i can just tap send set a nickname and exactly i can just set a nickname or i can just type something like this maximum 25 char since this is only visible to you so just save changes and there you have it so then it just becomes like a normal chat and you can see this address you can see the ethereum balance yeah this is the big one right then you can see center qr code address and all of that so yeah