Helium plugin added not showing in home page

Helium plugin added to the notebook paragraph not showing in the home screen 

I added   3  custom plugins from the repository to my notebook  it displayed them as notebook.png

after that particular notebook, I made a home page using

<property>  <name>zeppelin.notebook.homescreen</name>  <value>2GA2ZVT14</value>  <description>id of notebook to be displayed in homescreen. ex) 2A94M5J1Z Empty value displays default home screen</description></property>

 after this am getting home screen as home.png