Adding a drop down of sites on a gravity form

Hi guys,

I am trying to build a front end Add event form and I want to be able to add the multi-site content copier to my form do you know if this would be possible? I am using Gravity forms and I have Gravity Forms + Update Post plugin installed which gives me a custom post field, would I be able to use this?

Hope you can help.

Kindest Regards

Luke Pope