Get and set parameter from background opened families

I am trying to open families from folder and get parameter values and set parameter and save.

Can you help guys?

Thank you.

there for the example from @erfajo, https://github.com/erfajo/OrchidForDynamo/blob/master/Samples/Dynamo_2.x.x/Families/SetGet.png

and the dyn file


you will need the Orchid package, Erfajo releases it with a custom installer on its github here