Using substitutions in CB Code Fields

Hi,

I'm trying to use substitutions in a CB Code field that pulls user data dynamically, e.g.
_{$user_id = '144';
echo '[cb:userfield field="avatar" user=" ' . $user_id . ' " /]';}

However, this returns 'UNAMED USER'.

Substitutions do work without a variable in the user field e.g.
_{echo '[cb:userfield field="avatar" user=" 144 " /]';}

Is it possible to use substitutions this way in the CB Code fields?

Substitutions are processed before the PHP is executed. So you won't be able to built substitutions using PHP like that. Use the below API if you need to get a fields value using PHP.

www.joomlapolis.com/documentation/279-community-builder/tutorials/18361-obtaining-field-values-through-getfields-api