Output result "not defined with remote powershell script

So trying to get my script working remotely but I cannot get any output and the script doesn't seem to even start to run. I have tested that winrm works from application polling engine server towards remote server with "winrm get winrm/Config -r:hostname". Execution mode is remote and I tried with http and https without success. Script works fine if I run it locally. If I have understood correctly changing execution mode to remote just runs this same script on the target server.

This is my script which I'm trying to get working:

# Arguments example: hostname1 hostname2

#Variables
$transfer_host = $args.get(0);
$ownname = $args.get(1);
$lockfile = "C:\temp\$ownname.$transfer_host.$(get-date -format ss-mm-dd-MM-yyyy).lock"
$transferedfile = "$ownname.$transfer_host.$(get-date -format ss-mm-dd-MM-yyyy).dat"
# Script starts
$Error.Clear();
 
# Try copy
echo $null >> $lockfile
$output=Measure-Command {Copy-Item C:\temp\output.dat \\$transfer_host\c$\temp\$transferedfile} | Select TotalSeconds

#Clean up
rm $lockfile
rm \\$transfer_host\c$\temp\$transferedfile

#Write output
Write-Host "Statistic:" $output.TotalSeconds
Write-Host "Message: Copy-item duration [sec]"

exit 0;

Any idea where to start troubleshooting?