Getting the data value from the Submit button in an adaptive card

[jdee111]

Hi,

I have an adaptive card that has a Submit button.  I want to make sure that the submit button is clicked, before moving onto the next stage by (and I'm open to ideas), setting a flag in the data section.

I've tried to get the value in a Response using:

${turn.activity.value.email_submitButtonClicked}

${turn.activity.value.email_submitButtonClicked.data}

${turn.activity.value.data}

None seem to work... can anyone help?