Freemarker Error: Unable to find wrapping for pcgen.base.math.OrderedPair

Getting an error message.

Updated code to:
<face>${pc.val.face}</face>

Face is the new OrderedPair

Face is an OrderedPair (x,x) format

Loads without error. Export generates this message:

23:14:03.325 SEVERE SwingWorker-pool-2-thread-3 BatchExporter:274 BatchExporter.exportCharacterToPDF failed
pcgen.io.ExportException: Error exporting character using template C:\Projects\pcgen\pcgen\outputsheets\base.xml.ftl : Unable to find wrapping for pcgen.base.math.OrderedPair

The failing instruction:
==> ${pc.val.face} [in template "base.xml.ftl" at line 136, column 31]
FreeMarker template error:
Unable to find wrapping for pcgen.base.math.OrderedPair

The failing instruction (FTL stack trace):
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==> ${pc.val.face} [in template "base.xml.ftl" at line 136, column 31]
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Java stack trace (for programmers):
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