Code"><pre class="sourceCode r"><code><span><span class="fu">ga_mp_event_item</span><span class="op">(</span></span>
<span>  item_id <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  item_name <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  coupon <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  discount <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  affiliation <span class="op">=</span> <span class="cn">NULL</span>,</