Json Path not working

[jesulo]

Json Path not working, give error in Test all steps but individual test not problem. cannot extract value from json by path "$.lastName": cannot parse as a valid JSON object: invalid object format, expected opening character '{' or '[' at: 'John' for the second parameter for prossecing but Json format is okay

{ "firstName": "John", "lastName" : "doe", "age" : 26, "address" : { "streetAddress": "naist street", "city" : "Nara", "postalCode" : "630-0192" }, "phoneNumbers": [ { "type" : "iPhone", "number": "0123-4567-8888" }, { "type" : "home", "number": "0123-4567-8910" } ] }

[colttt]

in which tempalte?

[mtxadmin]

Structure seems to be AD-like.