SarePoint Powershell Add user to Group

$FromGroupnames = "001总经理","010101管理本部"
$ToGroupname = "test"

$SPWeb = Get-SPWeb -Identity http://192.168.0.50:81/ $groups = $SPWeb.SiteGroups
$count = 0

foreach ($group1 in $groups )
{
foreach ($group2 in $FromGroupnames)
{
if($group1.name -eq $group2)
{
foreach ($user in $group1.users)
{
Set-SPUser $user -Web $SPWeb -Group $ToGroupname
Write-Host $ToGroupname.name "adding: " $user.name;
$count++
}
}
}
}
Write-Host "complete!user count ="$count