Azure CI/CD Json transformation on array - json

Question

When I'm creating a Task for an Azure DevOps release, can I transform the value of an object in an array, based on the "key" of the object?
As an example, I'm copying the example Json file from this article, which is this.
{
"Data": {
"DefaultConnection": {
"ConnectionString": "Data Source=(LocalDb)\\MSDB;AttachDbFilename=aspcore-local.mdf;"
},
"DebugMode": "enabled",
"DBAccess": {
"Administrators": ["Admin-1", "Admin-2"],
"Users": ["Vendor-1", "vendor-3"]
},
"FeatureFlags": {
"Preview": [
{
"newUI": "AllAccounts"
},
{
"NewWelcomeMessage": "Newusers"
}
]
}
}
}
What I have is something more like this, look at the "FeatureFlags" array. My array contains a list of "key"/"value" objects similar to this. I need to be able to transform the object in the array that matches a key, and have the transform process replace the "value" property value.
{
"Data": {
"DefaultConnection": {
"ConnectionString": "Data Source=(LocalDb)\\MSDB;AttachDbFilename=aspcore-local.mdf;"
},
"DebugMode": "enabled",
"DBAccess": {
"Administrators": ["Admin-1", "Admin-2"],
"Users": ["Vendor-1", "vendor-3"]
},
"FeatureFlags": {
"Preview": [
{
"key": "newUI",
"value": "AllAccounts"
},
{
"key": "NewWelcomeMessage",
"value": "Newusers"
}
]
}
}
}
For example, I want to change the value of "Newusers" in the object with a key of NewWelcomeMessage, to "AllUsers".
In the Azure Release "Variables" tab, can I simply use this as the "Name", Data.FeatureFlags.Preview.NewWelcomeMessage, and AllUsers as the value for it to transform the value for the correct object, or will this fail?
This pattern seems to work with XML, see this.