title: reset checkbox group with action button
body: <p>i've seen several entries regarding this issue and have tried several of them, but nothing has worked without either an error or just not at all...</p>
  <p>i have a checkbox group in my shiny dashboard body</p>
  <pre><code>checkboxGroupInput(&quot;dbr&quot;, selected = NULL,
                      h4(&quot;Select Data Breach Rating&quot;),
                      c(
                        &quot;Low&quot; = &quot;Low&quot;,
                        &quot;Medium&quot; = &quot;Medium&quot;,
                        &quot;High&quot; = &quot;High&quot;,
                        &quot;Critical&quot; = &quot;Critical&quot;
                         # End check list 
                         ), 
                        # End check group
                        ),
  </code></pre>
  <p>i also have a reset button in the dashboard body using an action button</p>
  <pre><code>actionButton(&quot;reset_artifact_entry&quot;, label = &quot;Reset&quot;)
  </code></pre>
  <p>in the server portion of the code i have an observeEvent</p>
  <pre><code>server &lt;- function(input, output, session) {
  
  # Rest button for artifact entry page
      observeEvent(input$reset_artifact_entry, {
          updateCheckboxGroupInput(session, &quot;dbr&quot;, selected = NULL)
          
      })
  </code></pre>
  <p>I'm sure the problem is in how i have this set up...
  when i run the code i get no errors, but when i click the button nothing happens either...</p>
  <p>cheers ~!</p>