Encountered undeclared output variable error in Script action - Flow designer

[Mahalakshmi Rav]

I'm working on a Flow Designer Action where I need to filter users based on the itil role using a Script Include and return a list of their sys_ids via Script step output variable.

Script Include (GetITILValidators):

var GetITILValidators = Class.create();
GetITILValidators.prototype = {
initialize: function() {},

getITILUsers: function(validatorsList) {
var itilUsers = [];

if (!validatorsList)
return itilUsers;

var userIds = validatorsList.split(',');

for (var i = 0; i < userIds.length; i++) {
var user = new GlideRecord('sys_user');
if (user.get(userIds[i]) && user.roles.toString().includes('itil')) {
itilUsers.push(user.sys_id.toString());
}
}

return itilUsers;
},

type: 'GetITILValidators'
};

Flow Designer Action:
Input: user_ids (Type: String, Mandatory)

Output: filtered_users (Type: Array.String)

Script Step:

(function execute(inputs, outputs) {

    var helper = new GetITILValidators();

    var result = helper.getITILUsers(inputs.user_ids);

    outputs.filtered_users = result;

})(inputs, outputs);

Whenever I run a Test in the Action Designer using any valid user sys_id (with itil role) the test fails with this error

Warning: Encountered undeclared output variable: filtered_users

What adjustment do I need to make in the code or Flow Action setup to fix this?

Any help would be appreciated!

[Mahalakshmi Rav]

@Ankur Bawiskar Thank you for your response, it's already declared in the Script action as an array.string

[Ankur Bawiskar]

@Mahalakshmi Rav 

Click on Exit Edit mode and did you map the output of action with Script Step output?

Like this I mapped

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Mahalakshmi Rav]

This worked, Now i can see the filtered users output in the test script action results.

Unfortunately when i ran a test with the main flow, this is returning empty value.

[Ankur Bawiskar]

@Mahalakshmi Rav 

are you not able to iterate that output using For Each?

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Mahalakshmi Rav]

Yes, it's because filtered_users output was returning an empty array and the for each step didn't iterate over any items