Voiceflow Snipet auto start?

I need some help regarding voiceflow snippet. My goal is to have a simple html with a text box and when i type something in it and hit enter, the voiceflow snippet should popup with the text from the textbox as a chat input. It works fine excpt that I should always click the 'start chat' button on the voiceflow widget to initiate it. Is there a way to automatically start the chat in the background ? Any parameter should be set in the snippet?

Thanks all