Pro form, node editor and multi form

Hello there,

How could it fill a form
open a popup (saw daniele’s video about it)
getting information from the first form as value for a second one inside the pop up
I know we could do that with node editor but can’t figure out how

i tried to use {{live_value}} to reuse it elsewhere in calculation on the page but it doesnt work
text field get the value, but impossible to use it in a calculation or else

@Daniele i would love to know what i do wrong

Up ?