Adding a steam userbar on forum signature

[tiraths00]

I'm trying to inform users of my forum how to add a simple steam userbar to their forum signatures, but the signature editor is converting the BBCode to JSON which is not displaying the image correctly.
BBCode:

[url=https://steamcommunity.com/id/2592][img]http://steamsignature.com/profile/default/76561198002789372.png[/img][/url]

It then gets converted to:

[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/steamsignature.com\/profile\/default\/76561198002789372.png"}[/IMG2]

Any help would be much appreciated.

[Wayne Luke]

Do you allow links in signatures for that usergroup? Usergroups -> Usergroup Manager. Edit the Usergroup, scroll down to signature permissions.

[glennrocksvb]

Image BB Code needs to be allowed too.