如何解释作为NSAppleScript结果返回的记录

I run an applescript from an objective-c application using NSAppleScript the executeAndReturnError method. This returns an NSAppleEventDescriptor object containing the result of the script. My script returns an applescript record. How do interpret the record in objective-c? For instance if the returned script record is { name:"Jakob", phone:"12345678" } how do I get the string "Jakob" in the name property?I run an applescript from an objective-c applic