Button/Autocomplete on Editor for Template Blocks

May I request one for the following please?


<video name="video1" youtube="" ></video>
<p>Video credit achieved: 
  <number displayDecimals="1">$video1.fractionWatched*100</number>%</p>
<answer hide name="video1Credit">
  <award credit="$video1.fractionWatched">
    <when>true</when>
  </award>
</answer>
<callAction triggerWith="$video1" target="$video1Credit" actionName="submitAnswer" />