title: Disabling a button if an immutable list contains empty value
body: <p>If a user enters a blank value in a textbox, the button should be disabled.
  I'm doing this check  using the following filter.But this does not work.Please advice.</p>
  <pre><code>                   &lt;ALink href='javascript:void(0);'
                      className='button primary default-size' id='globalParametersCancel'
                      content={localeHelper.translate('iaSampling.iaGlobalConfiguration.reset')}
                      isDisabled={(!this.globalParameterChanged) &amp;&amp; (!this.gaparameterlist?.find(x =&gt; x.value == ' '))}
                      onClick={this.reset} /&gt;     
  </code></pre>