Custom.AddProperty Method

 METHOD AddProperty(
	cPropertyName,
	uValue,
	nVisibility,
	cDescription
) AS LOGIC CLIPPER

[ClipperCallingConventionAttribute(new string[] { ... })]
public bool AddProperty(
	Usual cPropertyName = default,
	Usual uValue = default,
	Usual nVisibility = default,
	Usual cDescription = default
)