VSTemplate with build action

How do you create a VSTemplate so that it automatically sets the build action as "content" not the default which is "none"?

From stackoverflow

• Have you tried setting the SubType attribute of the ProjectItem to Content?

• that does not seem to have helped my template looks like this:

  <VSTemplate Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vstemplate/2005" Type="Item">
        <TemplateData>
          <DefaultName>SparkFileName.Spark</DefaultName>
          <Name>Happy</Name>
          <Description>Spark file</Description>
          <ProjectType>VisualBasic</ProjectType>
          <SortOrder>10</SortOrder>
          <Icon>__TemplateIcon.ico</Icon>
        </TemplateData>
        <TemplateContent>
          <References>
  
          </References>
          <ProjectItem SubType="Content" TargetFileName="$fileinputname$.Spark"  ReplaceParameters="true">Spark.Spark</ProjectItem>
        </TemplateContent>
      </VSTemplate>
  

• I am also interested in the solution.

• it doesn't look like this can be done from the .vstemplate file, however it looks like you can user .pkgdef file to accomplish what you want.