Well, I know this is not a direct answer, but an alternative solution... You can dowload the developer tool below which can be called from a Notes agent to generate a chart for a Notes client or web client user. The latest 2015 version has a new interface and the chart reports generate over 90% faster for Notes and web client users than the previous version.
Print Merge Reporter for IBM Notes - Mail merge, printing and reporting tool
• Mail merge Excel, contacts, barcodes and Notes app data to email or printer using Notes, iNotes, web
• Generate charts and reports to Word, Excel, and PDF format using Notes, web
• Export Notes app and Contacts data to Excel
Web client charting: It supports all web browser clients on Windows and Mac desktops. It requires a Domino Windows server with an Excel installation.
Requirements: Charting
Desktop platforms: Windows 10/8/7/Vista/XP, Mac OS X/9
Desktop software: Notes 9/8/7 and Excel 2016/2013/2010/2007/2004/2003 [or]
Web client and Excel 2016/2013/2010/2007/2004/2003 [or]
Web client and Excel Viewer (free)
Server platforms: Windows 2016/2012/2008/2003/2000, Linux, IBM i, AIX, Solaris
* Windows server required for web client access
Server software: Domino 9/8/7, Excel 2016/2013/2010/2007/2003 required for web client access
Tags: chart, charting, graph, graphing
Crucial tools for IBM Lotus Notes and Domino administration and development...
Find the "crucial tools you need to succeed" including product descriptions, downloads, demos and testimonials.
Speed up IBM Lotus Notes and Domino administration and development with these crucial software tools.
Better, stronger, faster productivity for administrators and developers.
Download and try the lite (free) version