XF 2.1 how to show the date of participation

[SkinsForum]

Hello friends,

I'm making a widget but I have a little problem
how to show the forumhome attendance date?

this didn't work

<dl class="pairs pairs--inline">
    <dt>{{ phrase('joined') }}</dt>
    <dd><xf:date time="$user.register_date" /></dd>
</dl>

 

[Russ]

Try:

{{ date($visitor.register_date) }}

 

[SkinsForum]

Try:

{{ date($visitor.register_date) }}

Thanks