Parameter of Array type in ARM Template - arm-template

Question

I have an ARM Template with a parameter of array type as follows:
How do I set values in 2nd and 3rd position of parameter array? (for instance, "b", "c" in this example)

Answer 1

Method 1: Directly using the array index -
You can use the values of Array parameter by using this expression:
For 1st value: "[parameters('parameter1')[0]]"
For 2nd value: "[parameters('parameter1')[1]]"
For 3rd value: "[parameters('parameter1')[2]]"
You can test this sample template for fetching the values from array and displaying in the output:
{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"parameter1": {
"defaultValue": [
"value1",
"value2",
"value3"
],
"type": "Array"
}
},
"resources": [],
"outputs": {
"firstValue": {
"type": "String",
"value": "[parameters('parameter1')[0]]"
},
"secondValue": {
"type": "String",
"value": "[parameters('parameter1')[1]]"
},
"thirdValue": {
"type": "String",
"value": "[parameters('parameter1')[2]]"
}
}
}
Update:
Method 2: If you want to use copyIndex. Use the below expression -
"[parameters('parameter1')[copyIndex()]]"
Please check the below example:
{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"parameter1": {
"defaultValue": [
"strvalue1",
"strvalue2"
],
"type": "Array"
}
},
"resources": [
{
"type": "Microsoft.Storage/storageAccounts",
"apiVersion": "2019-04-01",
"name": "[parameters('parameter1')[copyIndex()]]",
"location": "[resourceGroup().location]",
"sku": {
"name": "Standard_LRS"
},
"kind": "Storage",
"properties": {},
"copy": {
"name": "storagecopy",
"count": "[length(parameters('parameter1'))]"
}
}
]
}