Cursor inside fixed Rectange HELP

I’m Unity user and i recently moved to UE4. I was trying to get the Mouse cursor (witch is visible in the viewport) moving just inside a rectangle.
Here is my C# code i want to get in Blueprint:

deadzone_rect = new Rect((Screen.width / 2) - (deadzone_radius), (Screen.height / 2) - (deadzone_radius), deadzone_radius * 2, deadzone_radius * 2);

You literally just plug that into the appropriate blueprint nodes to get it working.

Use the following nodes to get the appropriate values: getViewportSize

Be warned though. Im having trouble with return values on mouseposition when playing windowed and having the mouse go past the viewport.