Custom field inside of another function

I am trying to figure it out for quite some time now. Name and photo are called correctly but custom field isn’t ($agenttitle).

One of my pages displays members names and pictures through a function (and it has to do it this way because of styling):

<div class="agents"><?php agent_photos();?></div>

While the function itself (agent_photos) looks like this:

[Code moderated as per the Forum Rules. Please use the pastebin]

I am not sure what’s missing.
Thanks for help!