>The default behavior for parameter passing is by value unless specified. What happens when you pass an object to a function in the () like:

You only pass an object reference, wether you pass the parameter by Value or Refrerence. The object reference is a pointer. Consider this as an explanation (BTW, I've never tried this before I could be way off, but youb made me think about it)

This would be the difference between passing an object refrence by value or reference:

local oObj
oObj = createobject(oFirst)

?oFirst.Name
ChangeObject(oFirst)
?oFirst.Name
ChangeObject(@oFirst)
?oFirst.Name

function ChangeObject
     lparam toObj
     toObj = createobjet(oSecond)
emd function

define class oFirst as custom
     name = 'First'
enddefine

define class oSecond as custom
     name= 'Second'
enddefine

I don't have VFP by, does this give:

First
First
Second
?