vRA 7.1 - Making 'Description' field required in Blueprint

In our Blueprint we wish to make the “description” field mandatory.  In the previous version of vRA I edited the ‘ConfirmNewRequest.aspx’ file and this section in particular:

<tr id="trDescription" runat="server">

     <td class="Label">

           <vmps:Literal runat="server" IsLabel="true" Text="<%$Resources:Labels,Description%>" IsRequired="true" />

The addition was IsRequired="true"

However even with adding ‘IsRequired=”true” the field still isn’t showing a red asterisk next to it when deploying a new Blueprint?