Is it possible to pass a Cascaded Array as a value in Orchestrator Queue SpecificContent?

Help Orchestrator
1

I am using Add Queue Item activity in UiPath Orchestrator.

I have an array like below that I want to pass as one of the values in SpecificContent:

Example array:
[{

  • Source: AWY
  • Destination: SBT
  • Seat selections for multiple travelers [{Passenger : First Name , Seat No : 20},{Passenger}, {Passenger : First Name , Seat No : 21}]
    },
    {
  • Source: SBT
  • Destination: TRR
  • Seat selections for multiple travelers [{Passenger : First Name , Seat No : 67},{Passenger}, {Passenger : First Name , Seat No : 89}]
    },
    ]

Currently, SpecificContent accepts key–value pairs, and when I try to pass an array directly, it does not work as expected.

Other than converting the array to a normal string and passing it,
is there a supported way to pass an array as part of SpecificContent and retrieve it later while processing the queue item?

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2

Yes, you can serialize the array before adding the queue item and deserialize it when processing.

Add Queue Item:

SpecificContent("Seats") = JsonConvert.SerializeObject(seatsArray)

Process Queue Item:

seatsArray = JArray.Parse(TransactionItem.SpecificContent("Seats").ToString)

This could be one of the approaches for passing arrays in queues.

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Forum Engagement Daily Reports
3

Hi @Anju_CP

SpecificContent doesn’t support arrays or objects directly, only key–value pairs. What usually works is converting the array to JSON and storing it as a string. When you read the queue item, deserialize it back to an array/list and process it. That’s the standard and reliable way to handle this in UiPath queues.

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4

@Anju_CP

Simple answer. No arrays are not supported. Converting to string/serializing is the way

cheers

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5

Hey @Anju_CP

Do you want your data look like this? in this Queue

BuisnessTrips:{“Number”:““,“ExpenseDetails”:
[{“ExpTy”:”“,“Account”:”“,“TaxCode”:”“,“Amount”:”“,“Description”:”“},
{“ExpTy”:”“,“Account”:”“,“TaxCode”:”“,“Amount”:”“,“Description”:”*”}]}

let me know i can help you on this

6

@Shakti_Singh , This is the format.
I resolved this by serializing → Push To Queue → Deserializing while retrieving the transaction item.

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7

Since SpecificContent cannot “see” the internal structure of your array, you must package it into a JSON string during the Add Queue Item phase and unpack it during the Get Transaction Item phase.

Phase 1: Adding the Item (The Dispatcher)
To pass your array, use the Newtonsoft.Json library (already built into UiPath).
1. Variable: Let’s say your array is arr_TravelData.
2. Activity: In the Add Queue Item activity, click the ItemInformation (SpecificContent) ellipsis.
3. Entry:
a. Name: “TravelDetails”
b. Value: Newtonsoft.Json.JsonConvert.SerializeObject(arr_TravelData)
c. Expert Tip: By using SerializeObject, you preserve the complex nested structure (Passengers, Seat Nos, etc.) exactly as it is, without losing the schema.

Phase 2: Retrieving the Item (The Performer)
Once the Performer picks up the item, the value inside “TravelDetails” will be a string. You need to turn it back into a usable object (or a JArray).
a. Activity: Use a Get Transaction Item (variable: out_TransactionItem).
b. Logic: Use an Assign activity to deserialize the data.
- To: json_TravelArray (Type: Newtonsoft.Json.Linq.JArray)
- Value: Newtonsoft.Json.Linq.JArray.Parse(out_TransactionItem.SpecificContent(“TravelDetails”).ToString)

Using JArray or JObject (from Newtonsoft.Json.Linq) allows you to query the data dynamically later without complex string manipulation (like Regex or Substring).
Example of retrieval after parsing:
If you want the Source of the first element:
json_TravelArray(0)(“Source”).ToString —> Returns “AWY”
If you want the Seat No of the first passenger in the first flight:
json_TravelArray(0)(“Seat selections for multiple travelers”)(0)(“Seat No”).ToString —> Returns “20”

Note:- Remember that a single Queue Item has a size limit (roughly 2MB in most Orchestrator configurations). If your array contains thousands of rows, consider splitting them into individual queue items instead.

8

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