Powershell Gui Creation HELP

Hi guys, i'm trying to get into this as it looks to be so much easier to create for repeatable use.

I want to start off small, and try and create a gui just removing a mail forward from a user

Set-Mailbox"test.user” -ForwardingAddress $null

How would i turn that into a gui based platform, so it will just give me a "text box" to enter the name in, and an "ok" button

Any help is greatly appreciated :)

Thank you