How do I accept hyphenated variable names when looping and evaluating?

I've been using  sys-con.com's code in my Application.cfc file to check for malicious input through FORM and URL variables, but I'm running into issues with hyphenated variable names (specifically Google's reCAPTCHA.) This is the code I use:

<cfloop collection="#form#" item="formelement">
    <cfif isSimpleValue(evaluate(formelement)) AND refindnocase(sqlregex, "#evaluate(formelement)#")>
        <cflocation url="messages.cfm?message=invalid">
        <cfset StructClear(form)>
	<cfabort>
    </cfif>
</cfloop>

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And this is the error I'm receiving:

Variable G is undefined.

Which makes sense, because it's looking at g-recaptcha-response. What do I need to do to my code to allow it to accept hyphenated variable names?

Thanks!