It doesn't work when I use the absolute directory in the Win 64 Plathform,On the contrary,it works in the Win32 Platform

[JiaQingQiang]

It doesn't work when I use the absolute directory in the Win 64 Plathform,such as "DosCommand1.CurrentDir := "E:\TEST\test.exe"",when I use the command "doscomand1.execute",it will catch an error which shows [the system cannot find the file specified]。but if I put the third exe program in the same directory of my delphi exe program,use the following statement,"DosCommand1.CurrentDir := GetCurrentDir;"，it works。
In the win32 Platform，it's fine！
I want to Thank you so much !