title: Attempting to change marked date on calender in react native is resulting in a syntax error
body: <pre><code>&lt;Calendar 
     markedDates={{`${this.state.currentDate}%`: {selected: true, marked: false, selectedColor: '#ff7f00'},}}
     onDayPress={(day) =&gt; this.manageGroups(day)}
  /&gt;
  </code></pre>
  <p>I am trying to set the marked date on the calender to the currentDate state. however, doing it this way is yielding in a syntax error. How can I solve this? I have provided the link to the source of where I got my calender from.</p>
  <p><a href="https://github.com/wix/react-native-calendars" rel="nofollow noreferrer">https://github.com/wix/react-native-calendars</a></p>