How to update the value of a custom field in Jira cloud?

[Jamshaid]

I am trying to update the value of a custom field in Jira Cloud using ScriptRunner. Here is my code

static void updateCustomField(String apiUrl, String authString, String data) {

def url = new URL("$apiUrl")

def connection = url.openConnection() as HttpURLConnection

 connection.requestMethod = "PUT"

 connection.setRequestProperty("Authorization", "Basic $authString")

 connection.setRequestProperty("Content-Type", "application/json")

 connection.doOutput = true

def jsonBody = new JsonBuilder([

 fields: [

"customfield_10389": "{"+data +"}" // Assuming this custom field accepts simple text

 ]

 ]).toString()

print(data)

 connection.outputStream.with { os ->

 os.write(jsonBody.bytes)

 }

if (connection.responseCode == 200) {

println "Custom field updated successfully."

 } else {

println "Failed to update issue: HTTP ${connection.responseCode} - ${connection.responseMessage}"

 }

 }

But, it always ends up with 400 error:

Failed to update issue: HTTP 400 - Bad Request

I have tried adding the variable as follows but it still did not work:

def jsonBody = new JsonBuilder([

 fields: [

"customfield_10389": data

 ]

 ]).toString()

Here is what data is there in data variable:

---> (Failed Verification) Task : CT81 with title Perimeter Security Controls are up to date for all internet Facing Mobile and Web Applications. has failed verification with status = none
---> (Failed Verification) Task : CT59 with title Send formal notification email to the PM and STO has failed verification with status = none
---> (Failed Verification) Task : CT58 with title Cyber Security Advisor's Manager or delegate has reviewed the SPIR and evidence has failed verification with status = none
---> (Failed Verification) Task : CT91 with title Engage Network Security for review or assessment of network configurations and solution design has failed verification with status = none
---> (Failed Verification) Task : CT87 with title Security Issue finding record has been logged for any security control gaps/deficiencies in requirements and design has failed verification with status = none
---> (Failed Verification) Task : CT75 with title All personal privileged IDs have been removed and non personal privileged IDs are on-boarded onto the password vault (CyberArk) has failed verification with status = none
---> (Failed Verification) Task : CT72 with title All impacted applications have a record in the Application Catalogue (AppCat), which includes appropriate sensitivity information has failed verification with status = none
---> (Failed Verification) Task : CT65 with title Provide the final solution (SA) document as reviewed by Cyber Security for the appropriate APT forum(s) has failed verification with status = none
---> (Failed Verification) Task : CT64 with title The HLRD/LRD includes appropriate security requirements from the BMO Cyber Security Standards and Controls has failed verification with status = none

What might be going wrong? I am unable to get any reason for this. Where do i find the documentation for Jira Cloud Rest API?

Thanks 

[Jamshaid · Accepted solution]

I got it working using this as it was a multiline text field.

---

def connection = url.openConnection() as HttpURLConnection

 connection.requestMethod = "PUT"

 connection.setRequestProperty("Authorization", "Basic $authString")

 connection.setRequestProperty("Content-Type", "application/json")

 connection.doOutput = true

String jsonBody = new JsonBuilder([

 fields: [

 customfield_10389: [

 version: 1,

 type: "doc",

 content: [[

 type: "paragraph",

 content: [[

 type: "text",

 text: logs

 ]]

 ]]

 ]

 ]

 ]).toString()