Template

gistfile1.txt

{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "testArray": {
            "type": "array",
            "metadata": {
                "description": "Array of tests."
            }
        }
    },
    "variables": {
        "MyName": "SimpleName"
    },
    "resources": [
    ],
    "outputs": {
        "hostname": {
            "type": "string",
            "value": "[reference(parameters('testArray'))]"
        }
    }
}