Problem with form date extraction with duckling

I have have a form which purpose is to extract two dates. I’m using duckling to extract the dates and it works well, unless i provide one of the dates inside the message which “triggers” the form. I’m using the FormAction validate function to move the date from duckling time dimesion to the correct slot. However this does not work i i provide a date in the message which triggers and starts the form since the validate function doesnt get called in that case.

Hopefully you get what I’m trying to achive!

I appriciate any help i can get, thanks!

could you please give one example to show that. And what is the type of your slots in domain.yml