How to put validation for the Attachment

Summary

The Lead should not be Converted to agreement without an attachment

Content

Hi All,

 The lead should not be converted to agreement (custom object) without an attachment

I tried the below script its not working.Kindly help me on this requirement.

 

if (LeadStatus_Custom_c == 'CONVERTED')
{
   def attachVO=Attachment
  if(!attachVO.hasNext())
  {
  throw new oracle.jbo.ValidationException("You are not allow to covert the Agreement without Attachment")
    
   
}
}

 

Regards,

Deepak

Version:

19B