ARM template array parameter

I used the following using an array parameter:

parameter declaration:

"customEmails": {      "type": "array",      "metadata": {        "description": "alert email addressess"      }}

in the parameters file:

"customEmails": {      "value": [        "email1@domain.com",        "email2@domain.com"           ]    }

usage:

"customEmails": "[parameters('customEmails')]"

I found a solution. The main problem was that my comma separated list of e-mail addresses had a space after each comma.

The way I have implemented it now is like this:

Define a string parameter with a comma separated list of e-mail addresses. Don't have spaces in the list.

Define a variable like this:

"customEmails" : "[split(parameters('AlertEmailRecipients'), ',')]"

and then reference that variable in the alerting action:

"action": {    "odata.type": "Microsoft.Azure.Management.Insights.Models.RuleEmailAction",    "sendToServiceOwners": false,    "customEmails": "[variables('customEmails')]"}

The example actually does this, but doesn't make it clear the the list of e-mails can't contain spaces.