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<div class="section" id="node-red-faq">
<h1><strong>Node-RED - FAQ</strong><a class="headerlink" href="#node-red-faq" title="Permalink to this headline">¶</a></h1>
<div class="section" id="interfacing-with-openrpa">
<h2>Interfacing with OpenRPA<a class="headerlink" href="#interfacing-with-openrpa" title="Permalink to this headline">¶</a></h2>
<p>Here pertain questions related to interfacing Node-RED with OpenRPA.</p>
<div class="section" id="how-to-trigger-an-openrpa-workflow-from-node-red">
<h3>How to trigger an OpenRPA Workflow from Node-RED?<a class="headerlink" href="#how-to-trigger-an-openrpa-workflow-from-node-red" title="Permalink to this headline">¶</a></h3>
<p>To do that, users can simply add a <a class="reference internal" href="node_red.html#rpa-workflow"><span class="std std-ref">RPA Workflow</span></a> and wire it to either a <code class="docutils literal notranslate"><span class="pre">workflow</span> <span class="pre">in</span></code> node or an <code class="docutils literal notranslate"><span class="pre">inject</span></code> node. They must select the <code class="docutils literal notranslate"><span class="pre">Workflow</span></code> which will be run and the <code class="docutils literal notranslate"><span class="pre">Robot</span></code> which will execute it.</p>
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<div class="section" id="how-to-send-a-variable-from-openflow-forms-to-node-red">
<h3>How to send a variable from OpenFlow Forms to Node-RED<a class="headerlink" href="#how-to-send-a-variable-from-openflow-forms-to-node-red" title="Permalink to this headline">¶</a></h3>
<p>This is thoroughly documented in the <a class="reference internal" href="node_red.html#using-openflow-forms"><span class="std std-ref">Using OpenFlow Forms</span></a> section.</p>
</div>
<div class="section" id="how-to-solve-gyp-err-stack-error-gyp-failed-with-exit-code-when-installing-node-red-from-npm">
<h3>How to solve <code class="docutils literal notranslate"><span class="pre">gyp</span> <span class="pre">ERR!</span> <span class="pre">stack</span> <span class="pre">Error:</span> <span class="pre">gyp</span> <span class="pre">failed</span> <span class="pre">with</span> <span class="pre">exit</span> <span class="pre">code:</span> <span class="pre">?</span></code> when installing Node-RED from <code class="docutils literal notranslate"><span class="pre">npm</span></code>?<a class="headerlink" href="#how-to-solve-gyp-err-stack-error-gyp-failed-with-exit-code-when-installing-node-red-from-npm" title="Permalink to this headline">¶</a></h3>
<p>Users must run the following command:</p>
<div class="highlight-powershell notranslate"><div class="highlight"><pre><span></span><span class="n">npm</span> <span class="n">install</span> <span class="n">-g</span> <span class="n">node-gyp</span>
<span class="n">node-gyp</span> <span class="n">rebuild</span>
</pre></div>
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