Sending API request with curl

Hi,
Is it possible to use this plugin to send a curl request using an action hook from a form (with Formidable form plugin). My attempts so far have resulted in the snippet being deactivated “due to a fatal error”, and no error is being logged even with the error log setting switched on. Just want to make sure it’s possible to do what I need to, so I know that it’s my code causing the problem.