FormIt emailTo set through Hook with Multiple Values does not work

[[!FormIt? emailTo=`[[+emailRecipient]]`]]

$hook->setValue('emailRecipient', '[email protected]');
$email_recipient = $hook->getValue('emailRecipient');
error_log($email_recipient);
// returns [email protected]

$hook->setValue('emailRecipient', '[email protected],[email protected]');
$email_recipient = $hook->getValue('emailRecipient');
error_log($email_recipient);
// returns [email protected],[email protected]

(ERROR @ mysite.com/core/components/formit/model/formit/fihooks.class.php : 552) [FormIt] An error occurred while trying to send the email. You must provide at least one recipient email address.

[[!FormIt? &emailTo=`[email protected],[email protected]`]]

$hook->formit->options['emailTo'] = '[email protected],[email protected]';

<?php
error_log("hook1: ".$hook->formit->options['emailTo']);

// Pull Division and Region selected from Form
$np_msds = $hook->getValue('request-msds');

// Get email address based whether or not SDS checkbox is selected
if($np_msds == "yes"){
    $hook->formit->options['emailTo'] = "[email protected],[email protected]";
    error_log("hook form1: ".$hook->formit->options['emailTo']);
} else {
    $hook->formit->options['emailTo'] = "[email protected]";
    error_log("hook form2: ".$hook->formit->options['emailTo']);
}

error_log("hook last: ".$hook->formit->options['emailTo']);
error_log("******************** SNIPPET ENDS");

return true;

[[!FormIt? ... &hooks=`mySnippet,email`]]

******************** SNIPPET BEGINS, referer: http://mysite.com/page.html
hook1: , referer: http://mysite.com/page.html
hook form1: [email protected],[email protected], referer: http://mysite.com/page.html
hook last: [email protected],[email protected], referer: http://mysite.com/page.html
******************** SNIPPET ENDS, referer: http://mysite.com/page.html

[2016-10-20 16:15:11] (ERROR @ /var/www/vhosts/mysite.com/core/components/formit/model/formit/fihooks.class.php : 379) [FormIt] Please specify a recipient or recipients for the email.

<?php
$path = MODX_CORE_PATH . 'components/opc_database/';
$result = $modx->addPackage('opc_database',$path . 'model/','');
 
if (! $result) {
    return 'failed to add package';
} else {
 $pe = $_GET["pe"];
 $opc_ID = trim($pe);
// $opc_ID = 11;

$opc = $modx->getObject('Person', array('PKPersonId' =>  $opc_ID));

$emd = $opc->get('PersonEmailDomain');
$emp = $opc->get('PersonEmail');
//
$opc_em = $emp."@".$emd;
$spf_opc = "OPC: ".$opc_em;
//
$emto = trim($opc_em);
$modx->setPlaceholder('addressTo',$emto);

$modx->setPlaceholder('opc_addressTo',$spf_opc);
$hook->formit->options['emailTo'] = $emto;
}
return true;

[!FormIt? 
    $prehooks = `load-opc_em`
	&hooks=`email,redirect` 
	&emailTpl=`MyTestEmailChunk` 
        &emailSubject=`Website Query`
	&redirectTo=`81`
]]

<h2>Contact Form</h2><div class="well">
 
<form action="[[~[[*id]]]]" method="post">
     
    <input type="text" name="opcname" value="[[+opcname]] [[!+fi.opcname]]" class="input-block-level">
    <div id="name">
        <label for="name">Name:</label>
        <div class="controls">
            <input type="text" name="name" value="[[!+fi.name]]" class="input-block-level">
        </div>
    </div>
 
    <div id="email">
        <label for="email">Email:</label>
        <div class="controls">
            <input type="text" name="email" value="[[!+fi.email]]" class="input-block-level">
        </div>
    </div>
 
    <div id="comment">
        <label for="comment">Comment:</label>
        <div class="controls">
            <textarea name="comment" cols="30" rows="10" value="[[!+fi.comment]]" class="input-block-level"></textarea>
        </div>
    </div>
 
    <input type="submit" value="Submit" class="btn btn-primary">
 
 
</form>
 
</div>