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I cant get the values from this field  "custrecord_ilo_bank_account_name"  from a custom list related to vendor

You have access only to a limited number of joined records in the PDF renderer.  Usually custom fields come through but I don't think you can arbitrarily connect to joined records through those "pointers"; the list of available records is in the Advanced Template Field Reference found in the User Guides in the Help.

If you want to get fields from those records, you'll probably have to source them on to the record itself (hidden) as a custom fields, then reference the fields in the PDF template.  We have used this successfully with several clients.