Custom Block Theme Help

[WPCom]

In IPB 3, I was able to use a member data feed and use the variable $r['field_18'] to pull data from a custom profile field to sort members into lists depending on their value. On the new block templates, I am unable to do so. Documentation is almost impossible to find, and was wondering if anyone would know how to do so.

 

Thanks!

Code from IPB 3:

<foreach loop="$records as $r">

	<if test="$r['field_18'] === "1"">
		<a href="{$r['url']}">{$r['title']}</a>
	</if>
</foreach>

Code in IPB 4 (What I think it should be but is not): 

{{foreach $members as $member}}
{$member->link()|raw}{$member['field_28']}
{{endforeach}}

The code is not exactly what the one before was, but im just trying to output the value of the field at this point.