register event listener ZOHO.embeddedApp.on("PageLoad")

register event listener ZOHO.embeddedApp.on("PageLoad")

I am try to develeop an extension and I need to get selected Contact records on a custom widget

I am using google chrome browser
the below function is not working 

<script> 
 

  ZOHO.embeddedApp.on(
  "PageLoad",
  function(data){
  

 

 
    
  console.
  log(data);
  

 

 

  })
  

 

 

  </script>
  

 

 

  

   

  

 

 

  and below is working
  

 

 

  

   

  

 

 

  <script>
  

 
ZOHO.embeddedApp.init()
 

  </script
So my question is Why the  ZOHO.embeddedApp.on("PageLoad") is not working although the ZOHO.embeddedApp.init() working.


Also I am open other solutions to get selected Contact records on a custom widget.

Thank you.

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