If avatar is xxx url -> Replace with { } code img source

[Skyrider]

I was wondering if someone could help me out. There are tons of people of whom are not using an avatar, but are linked to steam that has an avatar using "{vb:raw steam_info.avatarfull}" I was hoping for a code that if someone is using for example a default avatar url, it'll be changed to the img src {vb:raw steam_info.avatarfull}. So in short, a if / else. Including if the user belongs to a specific usergroup for the avatar url replacement.

Regards,
Skyrider

[Skyrider]

I actually think MarkFL's replacement code at:
https://vborg.vbsupport.ru/showthread.php?t=321819

Will work (I hope, seeing I'm targeting a img url) I'll go try it out.