Error formatting number with commas

[hwa...@gmail.com]

Got this error in process:

2015-06-30T15:45:41+0000 - Task "Manual Task for Treasurer" (id: 7[2] - status: ABORTED): Error while processing {reminder_text}<br/><br/>Hello<br/><br/>A Request ({c_item}) from {company} for ${c_amount_requested?string.number} has been assigned to you.<br/><br/>Please click <a href="{P_task_url}">here</a> to access the approval form.<br/><br/>Best regards.
Expected hash. c_amount_requested?string evaluated instead to freemarker.template.SimpleScalar on line 1, column 97 in Manual Task for Treasurer.

The change I made was to format the number with commas by replacing "${c_amount_requested}" to "${c_amount_requested?string.number}"
This worked in test with newly submitted requests, but is erroring out in acceptance mode with in-progress requests.

Help?

[tedd...@nana.com]

Seemed to hit some weird bug with above, but I worked around it by using:
${c_amount_requested?number?string("#,###")}
instead.