How to prepopulate Dynamic Dropdown widget through URL parameters?

Hi, I am tryin to use th http://prepopulate.jotform.io/ for a Dynamic puldown menu and it is not working, it does not shows the dynamic pulldown options to choose.

Nevertheless I do not know how to construct it by hand, I tryed few ones but w/o success, can you help me?

example: suppose {var1}="Green-Car - 2016.07.23" on the database, how to pass this using URL codes? Tyed URLENCODE too.

https://form.jotformpro.com/xxxxxxx/&var1=Green-Car%20-%202016.07.23

any clue?

Hello certipma,

If I understand your requirement correctly, you want to prepopulate Dynamic Dropdown widget. Is that correct?

Please be noted that widgets are loaded in a separate iFrame within the form and it is not possible to prepopulate widget fields through URL parameter. You can only prepopulate regular form fields.

Thank you!