XF 2.0 editor icon

[AndreaMarucci]

In the help section you say

Editor icon
You may want your users to be able to simply click a button in their text editor to insert your BB code. If so, specify a Font Awesome icon, or an image to use for your button, otherwise leave this as None and the BB code will only be available through being typed directly.

so I've tried to put in the editor icon field for a Custom BBCode the name of the icon

fa-map-marker-alt

with no luck, and the code as f3c5 or /f3c5 with no luck

The icon is this one

Font Awesome

fontawesome.com

Can you tell me what do I've to put in?

 

[Mike]

Given that you've tagged this with 2.0, you're using Font Awesome 4: https://fontawesome.com/v4.7.0/icons/

That icon doesn't exist. The closest is "map-marker". (You don't use the fa prefix.)