To access an the value of an entry in a dictionary use the A_DICTIONARY[KEY], where KEY is the key of the entries which's value you would like to access.
Examples
{"Id": 7, "Color": "red"}["Id"]
This creates a dictionary with two entries, we access the value of the entry with key "Id" and return therefore 7.
If you access an element that does not exist your rule will fail. You can check if a certain entry is present with the in operator, e.g.
If "Id" in p.values then
p.values["Id"]
else
"Contract has no Id"
end
