Few days ago I had this:

FOR i = 1 TO oChild.DataParameters.COUNT
	cPar = oChild.DataParameters.GETKEY(i)
	xVal = oChild.DataParameters.ITEM(i)
*	addproperty(oChild, cpar, xval)
	oChild.ADDPROPERTY(cPar, xVal)
ENDFOR

This code works as it is now. However, with the commented line used instead of oChild.AddProperty(), it did nothing. The property wasn't added.

Is it that addproperty() function has some cases when it doesn't work? Is it because oChild has its own addProperty() method? I've always thought that addproperty() function can be used on anything that is an object.