Slice array values in assignee (UserTask)

Camunda 7 Topics
1

Hi all!

I have bpmn process with user task.
So, i can dynamically set Assignee like this

image
image832×111 9.47 KB

and it works fine!

claim is context variable name with type Json.
Json look like this

{
  "application_body": {
    "field-uuid-69": {
      "username": "someLogin",
      "email": "test@mail.com"
    }
  }
}

so camunda engine evaluate this expression
${execution.getVariable("claim").prop("application_body").prop("field-uuid-69").prop("username").value()}
as someLogin

But my question is how can i set value from array using expression?

Lets imagine i have json array:

{
  "application_body": {
    "array": [
      {
        "username": "aaLogin",
        "email": "testaa@mail.com"
      },
      {
        "username": "bbLogin",
        "email": "testbb@mail.com"
      },
      {
        "username": "ccLogin",
        "email": "testcc@mail.com"
      }
    ]
  }
}

and i want camunda to evaluate to a string
“aaLogin, bbLogin, ccLogin”

so then i can split the string via regex to extract list of assignees

I dont know count of array elements before start process.
it appears in runtime

is there a way to get all properties from array?