Issues in Set-ACL Powershell

I am having trouble while setting ACL permission on my domain servers, Using windows 2012r2 with powershell 5.0.

I am running below code but screen is just stuck no output or result. Permission is also not set on server.

$acl = Get-Acl "\\$server\$Share"

$rule = New-Object System.Security.AccessControl.FileSystemAccessRule("hosting\ctx-users","Modify", "ContainerInherit, ObjectInherit", "None", "Allow")
$acl.AddAccessRule($rule)

$rule = New-Object System.Security.AccessControl.FileSystemAccessRule("Users","Modify", "ContainerInherit, ObjectInherit", "None", "Allow")
$acl.AddAccessRule($rule)

$acl |Set-Acl "\\$server\$Share"