'Size' Property Of 'NotesDocument' returns negative value for attachment bigger than 2 GB

The size of the Notes Document can be determined using the "Size" LotusScript method.

Reference URL --> https://help.hcltechsw.com/dom_designer/12.0.0/basic/H_SIZE_PROPERTY_DOC.html

As per the information provided in the above URL, this method returns a document's size in bytes, including the size of any file attachments on the document.

If this method is used to determine the size of a Notes Document where an attachment is bigger than 2 GB, it returns a negative value.

Ex --> While trying to find the size of a saved Notes Document with an attachment of around 2.2 GB, below were the testing results using the "Size" LotusScript method.

1. Document actual size when checked via the "Document Properties" dialog.
2166427775 bytes

2. Document size using "doc.size" LotusScript method.
-2128539521 bytes

This issue was reported via SPR# ASHH9E2AMS to the development team. However, it was closed as an enhancement request.