Automagic Forum

I put "{sms_text}" (without quotes) in the text field and the flow turns red and nothing is read when I get a text message. I am sure I am not setting it up correctly...any advice? My first box is the trigger of SMS recieved and that flows into speeech output with the aforementioned {sms_text}.

What do you input in the speech output "text box" to get the program to read the body of the text?