Get user action on preSubmit

Hi everyone,

I'm designing a form, and i want the user to be prompted (using app.response) only when he deny a task in the workspace, but not when he approves it.

Is there a way to know inside the form which action is selected ?

For now, I put an app.response on the preSubmit event, but i need to call it only if he refuses the form in the workspace.

Thanks !