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How to replace a value from an array with value from a second array do until the first array is closed ?

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Posted on by CU-21081200-1

Hi There,

I have 2 arrays and want to replace the particular value from fist array using the second array until the first array is finished.

I want to replace an item "Assignee" in the 1st array with the "Name" from second array until the 1st array length

Please help!

Example :

1st Array

[
 {
 "Incident_Number": "INC000072692977",
 "Assignee": "Blank"
 },
 {
 "Incident_Number": "INC000072693455",
 "Assignee": "Blank"
 },
 {
 "Incident_Number": "INC000072692957",
 "Assignee": "Blank"
 },
 {
 "Incident_Number": "INC000072693485",
 "Assignee": "Blank"
 },
 {
 "Incident_Number": "INC000072692973",
 "Assignee": "Blank"
 },
 {
 "Incident_Number": "INC000072694578",
 "Assignee": "Blank"
 }
]

2nd Array with Assignees

[
 {
 "Name": "John Wick",
 "Name": "Renfield",
 "Name": "Expendables"
 }
]

OutPut array

[
 {
 "Incident_Number": "INC000072692977",
 "Assignee": "John Wick"
 },
 {
 "Incident_Number": "INC000072693455",
 "Assignee": "Renfield"
 },
 {
 "Incident_Number": "INC000072692957",
 "Assignee": "Expendables"
 },
 {
 "Incident_Number": "INC000072693485",
 "Assignee": "John Wick"
 },
 {
 "Incident_Number": "INC000072692973",
 "Assignee": "Renfield"
 },
 {
 "Incident_Number": "INC000072694578",
 "Assignee": "Expendables"
 }
]

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Answers (1)

rzaneti 4,456 Super User 2026 Season 1 on at

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Hi @RadhakrishnaP ,

I noticed that your 2nd array contains an object with 3 values for the same key, which is not allowed in Power Automate. In this case, I prepared the following flow assuming that those names are actually in an array and out any object (you can add a little more context about it and we can do any adjustments to make the flow fits to your use case).

Step 1 - initializing the variables
I'm initializing one variable per each array (2 first variables). Also, I have an integer variable for a counter (initial value as -1) and another array variable to store the final result (initial value as empty).

Step 2 - Looping the main array
When looping your main array, you first will test if your counter is lower than 2. If yes, you will increment it. If not, you will set it as zero. We started the counter variable as -1 to make sure that in the first interaction your first element from arr2 (index zero) is captured. For this same reason, we put 2 (and not 3) in the condition.

Step 3 - Replace the blanks
After that, you append to your 'final array' variable another object, which will replicate the same incident number from the original array and replace the 'assignee' for the current iteration value from the 2nd array (captured by the 'counter' variable):

The expression used in the 'assignee' is the following: variables('arr2')[variables('counter')]

This is your the output after the loop in 'final_array':

Let me know if it works for you or if you need any additional help!

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CU-21081200-1 on at

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Hi rzaneti ,

Thanks a lot for the explanation and the flow.
Its a perfect solution.

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