>>>Why does the assign method fire when a property with an assign method is used in a math expression on the right side of an assignment statement? This happens in VFP 6 and 7.
>>>

>>>DEFINE CLASS MyCLASS as Custom
>>>	PROCEDURE height_assign
>>>		LPARAMETERS vNewVal
>>>		*To do: Modify this routine for the Assign method
>>>		THIS.Height = m.vNewVal
>>>		WAIT WINDOW "Assignment fired - value "+ STR(vnewval)+".  Press any key to continue.."
>>>	ENDPROC
>>>ENDDEFINE
>>>
>>>* Test program to show anomally
>>>PROCEDURE test
>>>
>>>* create class
>>>o = CREATEOBJECT("myclass")
>>>* Wait window should appear in assign method
>>>o.height = 1
>>>* wait window should not appear in assign method
>>>y= o.height+2
>>>
>>>Return
>>>

>>
>>Just been playing, happens for width, top & left too
>
>Thanks... I will pass that along to the MS guys

Nor is it limited to custom classes, I get similar effect with classes based on Command buttons & Edit boxes too.