ft:object small bug with r_stFields?

Hi All,
FC6.2.10 on linux
Don't know if this is a bug or I'm doing something wrong but...

After a server side validation fails on a form and I want to pull the value 
of a submitted field (so I can create a custom select box and use this 
value to mark it as selected) i use:

<cfset thePrefix = 
replace(application.fc.utils.createJavaUUID(),'-','','ALL')> 
<ft:object typename="myForm" prefix="#thePrefix#" 
stPropMetadata="#stPropMetadata#" lFields="mySelectField" 
key="therecanbeonlyone" r_stFields="test" />

I then get an error:

The string 
caller.Request.farcryForm.stObjects.0204781DCB6E034195D8598F646AB09E.MetaData.mySelectField.Label 
is not a valid ColdFusion variable name. 

Notice the thePrefix value starts with a number. Of course this error 
doesn't occur when thePrefix starts with an alpha.

I've resolved the issue by 

<cfset thePrefix = 
rereplace(replace(application.fc.utils.createJavaUUID(),'-','','ALL'),'^[0-9]{1}','Z')>
This just checks if the first character is a number and then replaces it 
with a 'Z'.

Without digging too far into exactly which line is causing the error in 
object.cfm I thought it might be pointing out (no doubt somewhere around a 
caller function). Perhaps it's worth changing createJavaUUID() to check. I 
don't know how many other processes might be suffering the same issue.

Regards
Phil

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