Error Checking with the Set Statement

[dipique]

private int Orientation
{
	get { return Orientation; }
	set
	{
		if ((value > 0) && (value < 5))
			Orientation = value;
	}
}

What I want to do is, if the variable is set to something that's not between 1 and 4, don't change the value of Orientation; however, when you try it, the "Orientation = value;" line triggers the "set" of the property again so I get a stack overflow. Any ideas? I'd like for the error checking to occur within the set statement if at all possible.

Dan