title: Binding a field state (disabled or hidden) according to different selected values in a combobox
body: <p>I want to binding a field state (disabled or hidden) according to different selected values in a combobox.</p>
  
  <p>If just one option is selected in combobox works great</p>
  
  <p>Fiddle: <a href="https://fiddle.sencha.com/#fiddle/1itf" rel="nofollow noreferrer">https://fiddle.sencha.com/#fiddle/1itf</a></p>
  
  <p>stackoverflow: <a href="https://stackoverflow.com/questions/40153602/binding-component-state-conditionally">Binding component state conditionally</a></p>
  
  <p>I tried the following way:</p>
  
  <pre><code>   bind: {
        disabled: ('{isAlabama} || {isAlaska}')
     },
  </code></pre>
  
  <p>Apparently it works. If I select Alabama or Alaska,  the field Alabama is hidden.</p>
  
  <p>The problem is that when I select the combobox value Arizona should display the fields
  Alabama and Alaska, which does not, just show Alaska. </p>
  
  <p>Fiddle: <a href="https://fiddle.sencha.com/#fiddle/1j36" rel="nofollow noreferrer">https://fiddle.sencha.com/#fiddle/1j36</a>   EDITED</p>
  
  <p>It is possible to do this with binding?</p>