lass="r-in"><span><span class="va">items</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>  <span class="fu">ga_mp_event_item</span><span class="op">(</span>item_id <span class="op">=</span> <span class="st">"SKU_12345"</span>, </span></span>
<span class="r-in"><span>                   price <span class="op">=</span> <span class="fl">9.99</span>, </span></span