Update jira issue from result json REST API with GET method

[afrizal putrawan]

Hi all. 

If i have url Rest api as source data api : Https://xxx/abc/customers/custid1001/contracts/1002100

With method GET. When send that url . The result like this :

{"contracts": [{ "contractNumber": "4000001638", "customerId": "2604215", "productName": "1GP LAP+TV KAC REBRANDING", "productType": "CEL", "initialTransactionType": "POS", "contractStatus": "K", "contractSignatureDate": "2020-02-05T18:16:57.000+07:00", "financialParameter": { "cashPayment": { "amount": 3300000, "currency": "IDR" }, "downPayment": { "amount": 3101000, "currency": "IDR" }, "chargedItems": [ { "amount": { "amount": 199000, "currency": "IDR" }, "itemType": "TARIFF", "itemCode": "TITF_ORIG_FEE" }, { "amount": { "amount": 5000, "currency": "IDR" }, "itemType": "TARIFF", "itemCode": "TITF_MONTHLY_FEE" } ], "providedCreditAmount": { "amount": 6899000, "currency": "IDR" }, "annuity": { "amount": 760500, "currency": "IDR" }, "totalMonthlyPayment": { "amount": 765500, "currency": "IDR" }, "terms": 12, "totalPaymentPerCredit": { "amount": 12486000, "currency": "IDR" } }, "presentedInterestRate": 0.0269, "contractEvents": [ { "type": "CONSUMER_LOAN_DISBURSED", "eventDate": "2020-02-06T10:41:56.000+07:00", "createdBy": "0", "attributes": [ { "code": "DISBURSEMENT_AMOUNT", "value": "6700000" }] }, { "type": "CREATE_CONTRACT", "eventDate": "2020-02-05T18:14:13.000+07:00", "createdBy": "vincentp", "salesroomCode": "0047909OP", "attributes": [] }, { "type": "CONDITIONS_ACCEPTED", "eventDate": "2020-02-05T18:16:59.000+07:00", "createdBy": "ClientZone_User", "attributes": [] }, { "type": "CREATE_APPLICATION", "eventDate": "2020-02-05T18:09:44.000+07:00", "createdBy": "vincentp", "salesroomCode": "0047909OP", "attributes": [] }, { "type": "ARRANGE_APPLICATION", "eventDate": "2020-02-05T18:09:44.000+07:00", "createdBy": "vincentp", "salesroomCode": "0047909OP", "attributes": [] } ] }]} 

And  i want to update issue jira with parameter contact number or ID via Json code use Jira Automation addons. How do that, i try with json code update issue like this : 

{ 

"Update" : { 

"Customfield_1320xx" : " this set as contract number from above json code 

}

} 

 I what to change Customfield_1320xx with new value from above json code. Please help me to knnow about logic to get value from json rest api respon with GET method. 

Thnks