How to Send this API Call to Twilio Flow via CFHTTP - coldfusion

Question

So I'm trying to setup the API call to Twilio Flow using CFHTTP but am having no luck. Keeps returning CFHTTP doesn't exist when I try to view the response.
I've already tried adjusting from formfields to body, setting the charset to utf-8, etc. I was successfully able to send an SMS using the Programmable SMS portion but am having no luck hitting the Flow.
<cfset twilioUsername = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" />
<cfset twilioFlowSid = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" />
<cfset twilioPassword = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" />
<cfset twilioFrom = "+1XXXXXXXXXX" />
<cfset twilioTo = "+1XXXXXXXXXX" />
<cfset bodyFields = {
"name" : "Tester",
"cases" : "This Case this Time"
} />
<cfset twilioFlowResource = (
"https://studio.twilio.com/v1/Flows/#twilioFlowSid#/Executions.json"
) />
<cfhttp result="POST" method="POST" charset="utf-8" url="#twilioFlowResource#" username="#twilioUsername#" password="#twilioPassword#">
<cfhttpparam type="formfield" name="From" value="twilioFrom" />
<cfhttpparam type="formfield" name="To" value="twilioTo" />
<cfhttpparam type="formfield" name="Parameters" value="#serializeJSON(bodyFields)#" />
</cfhttp>
All I keep receiving is variable CFHTTP doesn't exist when I try to view the contents of cfhttp.filecontent.

Answer 1

It is because you used cfhttp's "result" attribute which ".. lets you specify an alternate variable in which to receive a result". Meaning CF won't populate the default variable named cfhttp. So in your example, you should be dumping the variable named #POST#. (Though to avoid further confusion, I'd recommend using something else, like "response".)
<cfhttp result="response"
method="POST"
charset="utf-8"
url="#twilioFlowResource#"
username="#twilioUsername#"
password="#twilioPassword#">
... parameters ...
</cfhttp>
<cfdump var="#response#">
Also, perhaps it's just a typo, but ... if that's the actual code you're using, it's missing pound signs around the variables in the <cfhttpparam> declarations. So the code is actually sending the literal string "twilioFrom" instead of the variable value: +1XXXXXXXXXX. These lines:
<cfhttpparam type="formfield" name="From" value="twilioFrom" />
<cfhttpparam type="formfield" name="To" value="twilioTo" />
... should be changed to this:
<cfhttpparam type="formfield" name="From" value="#twilioFrom#" />
<cfhttpparam type="formfield" name="To" value="#twilioTo#" />