[Puppet Users] Passing Parameters to Powershell

I am using Puppet installed with the powershell module. I am struggling
with how to pass a puppet variable through to powershell. For instance I
have the following in my module *init.pp* file:

class windows_dns(

$forwarders = '1.1.1.1'

) {
    anchor { 'windows_dns::begin': } ->
    class{'windows_dns::install': } ->
    class{'windows_dns::config': } ->
    class{'windows_dns::service': } ->
    anchor { 'windows_dns::end': }

}


Then in my *config.pp* file I have:

class windows_dns::config {

case $kernelmajversion {
6.3: {
                         $forwarder_execute =
'windows_dns/setdnsforwarders.ps1'
$forwarder_check = 'windows_dns/checkdnsforwarders.ps1'
$dnsforwarders = $windows_dns::forwarders

                 }
6.1: {
                         $forwarder_execute =
'windows_dns/setdnsforwarders_legacy.ps1'
$forwarder_check = 'windows_dns/checkdnsforwarders_legacy.ps1'

                 }
                 }

exec { 'forwarderscreate':

command => template ($forwarder_execute),
unless => template ($forwarder_check),
provider => powershell,
logoutput => true,

}

I have stored as a template in the manifest a powershell script file as:

$dnsforwarders | out-file C:\test.log

I obviously want to use a more complex output. I tried adding a parameter
to the top of my powershell script but dont understand how to pass that as
an option to puppet.

The variable passes through fine. I tested by changing the command to *command=>
template ($dnsforwarders)* and i of course got an error from puppet about
it not being able to find the template named *1.1.1.1* in the manifest. I
just dont know how to pass this through to the shell.