ServiceNow, How to populate value to a list variable - servicenow

Question

I am using ServiceNow develop instance to create a table, in which one field is type of list. The values of the list is populated by Outgoing Rest message.
In business rule, I make a hard coded to see how list values shall be what kind of form. The codes lists as below/1/: but when I update the field computer room, the computerlist's value is not populated. It looks like in the image/2/. How to populate values to a list type of field?
/3/ is the json string returned in pretty format. I try to populate hostName to computerlist, but failed.
/1/ scripts in business rule:
(function executeRule(current, previous /*null when async*/ ) {
try {
var r = new sn_ws.RESTMessageV2('x_383581_aiademo2.AIACmdbReq', 'Default GET');
var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();
// var responseObj = JSON.parse(responseBody);
current.computerlist = new Array;
current.computerlist[0] = "c1";
current.computerlist[1] = "c2";
current.computerlist[2] = "c3";
current.assignto = "How to make it as list";
current.update();
} catch (ex) {
var message = ex.message;
}
})(current, previous);
/2/
/3/
{
"code": 200,
"data": {
"dataList": [
{
"hostName": "MysqlServer",
"deviceIp": "192.168.1.40",
"site": "SH",
"hostId": "00000000",
"location": "Room01",
"id": 9381947
},
{
"hostName": "192.168.1.32",
"deviceIp": "192.168.1.32",
"site": "SH",
"hostId": "a8c02001",
"location": "66666",
"id": 9381950
},
{
"hostName": "back-server",
"deviceIp": "192.168.1.42",
"site": "SH",
"hostId": "00000000",
"location": "Room01",
"id": 9381996
},
{
"hostName": "192.168.1.32",
"deviceIp": "192.168.1.32",
"site": "SH",
"hostId": "00-0C-29-E0-31-32",
"location": "Room01",
"id": 9382011
},
{
"hostName": "core-server1",
"deviceIp": "192.168.1.30",
"site": "SH",
"hostId": "00000000",
"location": "Room01",
"id": 9382014
}
]
},
"msg": "success"
}
/4/ business rule script is updated to:
(function executeRule(current, previous /*null when async*/ ) {
try {
var r = new sn_ws.RESTMessageV2('x_383581_aiademo2.AIACmdbReq', 'Default GET');
var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();
var responseObj = JSON.parse(responseBody);
current.computerlist = responseObj.data.dataList.hostName;
current.assignto = responseObj.code;
current.update();
} catch (ex) {
var message = ex.message;
}
})(current, previous);

Answer 1

The answer is as follows:
(function executeRule(current, previous /*null when async*/ ) {
try {
var r = new sn_ws.RESTMessageV2('x_383581_aiademo2.AIACmdbReq', 'Default GET');
var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();
var responseObj = JSON.parse(responseBody);
var listLength = responseObj.data.dataList.length;
current.responsetest = responseObj.data.dataList[0].hostName;
var temp = new Array(listLength);
for(var j = 0; j<listLength; j++){
temp[j] = responseObj.data.dataList[j].hostName;
}
current.computerlist.setValue(temp);
current.assignto = temp[0];
current.vers = "0.0.1a";
current.description = responseObj.msg;
current.update();
////////////////////////good way///////////////////////////////
///////////current.computerlist.setValue(["1","2","3","4","5"]);
///////////////////////////////////////////////////////////////
} catch (ex) {
var message = ex.message;
}
})(current, previous);