Customized nickname instead of username

[Fredy]

Hi, thanks for reply. Yes, i'm trying change displayed nickname through capturing links and changing them using preg_replace_callback. It's only suitable way o found without modifying mybb. But my regular expression cannot capture links with extra formatting of nick

<a href="member.php?action=profile&uid=1"><span style="color:green">Fredy</span></a>

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Ok, nevermind. I must be sleepy yesterday or what, because that regular expression is today working So problem solved.