PPOM plugin for WordPress Issue

I use PPOM plugiin and created two new fields to add to my woo cart. The two new fields I added to the meta_data in the woo fields are 'salutation' and 'signature' The code in my custom plugin says this:

<div class="hard"><span class="message"><?php echo $msg_to;/*echo $item_data->get_meta('message_to_recipient');*/ ?></span></div>

I'm not sure how to add the two new fields so that they translate into the product which is a digital e-card. I have tried different methods and none worked. The only thing that shows up in the card is the first field listed in this string. For example, if I add ('salutation') then that's the only thing that appears in the card. ('salutation', message_to_recipient', 'signature') didn't work.

Not sure if anyone is familiar with PPOM and have any suggestions of where to look?

Thanks!!