Example for how to use $core_v2_user.Get() in a .vm file

Hello,

I'm new to Verint development and I'm struggling with the VM syntax.  Our customer needs Group search results to contain information about the Group's creator/owner.  I'm trying to do this with $core_v2_user.Get() per this documentation:

Here's what I've tried, but when I run this it crashes, most likely due to a syntax error:

#if ($searchResult.ContentType == "group")
    #set ($ownerId = $searchResult.Content.CreatedByUserId)
    #set ($owner = $core_v2_user.Get("%{Id=$ownerId}")
    <li class="content-item mphise-search-result-item" data-contenturl="$core_v2_encoding.HtmlAttributeEncode($searchResult.Url)" #if($hasMore) data-hasmore="true" #end>
        <div class="mphise-search-result-avatar $searchResult.ContentType">
           #if($searchResult.Content.AvatarUrl)
               <img class="search-result__avatar" style="width:40px; height: 40px;" src="$core_v2_encoding.HtmlAttributeEncode($searchResult.Content.AvatarUrl)" border="0px" alt="$resultTitle" />
           #end
        </div>
        <div class="mphise-search-result-details">
            <a class="search-result-title" href="$core_v2_encoding.HtmlAttributeEncode($searchResult.Url)">$resultTitle</a>
            <p class="search-result-description">$searchResult.Body</p>
        </div>
    </li>
#end

How do I use the $core_v2_user.Get() in a .vm file?  What's wrong with my syntax above?  I've confirmed that the $ownerId variable resolves to a legitimate value.

Thank you,

Chris