Using the API to close a ticket with tasks

I've closed all the tasks on a ticket but i'm trying to use the API to close a ticket. Using the API tool and the 'Close Request' section I am putting in my ticket number and this JSON string:

{

"request": {

"closure_info": {

"requester_ack_resolution": true,

"requester_ack_comments": "Mail fetching is up and running now",

"closure_comments": "Reset the pasword solved the issue",

"closure_code": {

"name": "success"

}

}

(just as test) and its giving this error:

{

"response_status": {

"status_code": 4000,

"messages": [

{

"status_code": 4003,

"type": "failed",

"message": "Request cannot be completed. Please fill the closure mandatory fields",

"fields": [

"description"

]

}

"status": "failed"

}

}

I've tried putting description in it, everywhere but it just keeps giving me a "Unable to parse the JSON" or keeps barking that description is a required field...any help would be great.

Attached 2 screenshots, one showing the API call and description field requirement and the other showing the field on closer that I cannot seem to find documentation on how to fill/close