Help - add record into a field using fx.php

I have a relational database and in one of the layout I have a portal which shows a list of record, my problem is if I want to add more information to a field which is a portal to that ID number using the fx.php how would I do in order to do not delete the previous record. I am not sure what am I doing wrong. Any help will be appreciated.

Here is what I have:

$edit_member = new FX($serverIP,$webCompanionPort);

$company_id = $_GET[company_id];

$name= $_GET[name];

$recid = $_GET[recid];

$edit_member->SetDBData(members.fp7',’web’);

$edit_member->AddDBParam('-recid',$recid);

$edit_member->AddDBParam('company_id',$company_id);

$edit_member->AddDBParam('name',$name);

$edited = $edit_member->FMEdit();

?>

<?php

foreach ($edited['data'] as $recordKey =>$recordData) {

?>

<?php echo $recordData['company_id'][0]; ?>

<?php echo $recordData[‘name’][0]; ?>

<?php } ?>

Thank you