I want pass _screen.aot by reference way ,not by value
I do it now like below

   acopy(_screen.aot ,aoT)
   lpo = NEWOBJECT([sort] ,[buildform.prg] ,.null.,@aot ,[caption])

but can not use like below

lpo = NEWOBJECT([sort] ,[buildform.prg] ,.null.,@_screen.aot ,[caption])

help ,thanks