<h3>Description</h3>
<p>Hi all!</p>
<p>It looks like in <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="487911529" data-permission-text="Issue title is private" data-url="https://github.com/kamailio/kamailio/issues/2051" data-hovercard-type="pull_request" data-hovercard-url="/kamailio/kamailio/pull/2051/hovercard" href="https://github.com/kamailio/kamailio/pull/2051">#2051</a> <code>record_route_preset</code> was exposed to KEMI, which is awesome (thank you <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/aalba6675/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/aalba6675">@aalba6675</a> !). However the second parameter in this function should be optional (see <a href="https://kamailio.org/docs/modules/devel/modules/rr.html#rr.f.record_route_preset" rel="nofollow">https://kamailio.org/docs/modules/devel/modules/rr.html#rr.f.record_route_preset</a>).</p>
<h3>Troubleshooting</h3>
<p>When using with a single parameter, the following error is thrown:</p>
<p><code>Dec  9 13:24:13 ip-10-0-0-1 /usr/local/sbin/kamailio[15828]: ERROR: app_ruby [app_ruby_api.c:499]: sr_kemi_ruby_exec_func_ex(): invalid str parameter type 2 (1)</code></p>
<h4>Reproduction</h4>
<p>(ruby Kemi)</p>
<div class="highlight highlight-source-ruby"><pre><span class="pl-c"><span class="pl-c">#</span> Failure</span>
<span class="pl-c1">KSR</span>::<span class="pl-c1">RR</span>.record_route_preset(<span class="pl-s"><span class="pl-pds">'</span>1.2.3.4:5060<span class="pl-pds">'</span></span>)
<span class="pl-c"><span class="pl-c">#</span> Success</span>
<span class="pl-c1">KSR</span>::<span class="pl-c1">RR</span>.record_route_preset(<span class="pl-s"><span class="pl-pds">'</span>1.2.3.4:5060<span class="pl-pds">'</span></span>, <span class="pl-s"><span class="pl-pds">'</span><span class="pl-pds">'</span></span>)
<span class="pl-c"><span class="pl-c">#</span> Success</span>
<span class="pl-c1">KSR</span>::<span class="pl-c1">RR</span>.record_route_preset(<span class="pl-s"><span class="pl-pds">'</span>1.2.3.4:5060<span class="pl-pds">'</span></span>, <span class="pl-s"><span class="pl-pds">'</span>1.2.3.4:5060<span class="pl-pds">'</span></span>)</pre></div>
<h3>Additional Information</h3>
<ul>
<li><strong>Kamailio Version</strong> - output of <code>kamailio -v</code></li>
</ul>
<pre><code>version: kamailio 5.4.0-dev2 (x86_64/linux) 283e46-dirty
</code></pre>

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