I can't seem to find any way to use the value of a parameter as part of another parameter in a **parameter file** for ARM templates:

```
{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "someCustomParam": {
        "value": "desired value"
    },
    "tags": {
        "value": {
            "tag1": "[parameters('someCustomParam')]",
            "tag2": "some tag value"
        }
    },
  }
}

```

Notice how I want to use the value of a previous parameter for the value of another.

The value for "tag1" is simply the string and the value does not get substituted in from the parameter() function. I've tested this by using the `Test-AzResourceGroupDeployment` PowerShell cmdlet.

Is there any way I can do this?