Microsoft Dynamics NAV 5.0 / Call Webservice with JSON-Response

Description: Call a Webservice with a JSON response out from nav 5.0 Your job: Create a new Codeunit: 50073 (The codeunit should later callable from the form 42. the button in form 42 will be implemented by ourself.) The response from the webservice looks like: { "NAV_Status" : "OK", "NAV_Status_Text": "Text123", "NAV_Shipping_Time_in_Days": "2" } The function in the Codeunit needs two in-parameters: 1. Document Type (for example: order) 2. No. (for example: A123423) both are parameters from the table "sales header". Then the function should read the shipping adress (ship-to-name, ship to adress, ship to post code, ship to city etc.) from the sales header document (here in the example: A123423) and send it via post or get to the webservice. post will be the prefered method. if it is not possible use a get parameter on the url. then call the webservice for example: http://internal/webservice123/ (with post data) or with get-data: http://internal/webservice123/?shiptoname=ABC&shiptopostcode=123 then store the 3 variables (NAV_Status, NAV_Status_Text, NAV_Shipping_Time_in_Days) into a variable. If NAV_Shipping_Time_in_Days is greater then "0" and "NAV_Status" is equal to "OK" then validate it into the field "Shipping Time" in the right sales order (which are given as in-parameter). If NAV_Status is "ERROR" then dont validate the "Shipping Time", just bring up a Alert-Message with "Error" and display the "NAV_Status_Text".