I've a hidden field set up called "source"
I've checked allow to be populated dynamically with a parameter name of "source"
I insert this to the page:
[gravityform id=1 field_values='source=ELLP1']
What I actually see in the source code is this:
<input type='hidden' name='gform_field_values' value='source=ELLP1' />
I'm passing this to Mailchimp and connecting source field in GF with source field in MC - nothing is being passed.
<input type='hidden' name='source' value='ELLP1' />