how to combine swm file with powershell

hi,I get strucked in "combining swm file with powershell",

there are two swm file in my volume D ,when i use the command "Export-WindowsImage -SourceImagePath D:\t.swm  -SplitImageFilePattern D:\t*.swm -DestinationImagePath G:\install.wim -SourceIndex 1"

it told me:"file exited,you can't create this file".

but when i used dism /apply-image command it works well.

i tried the command "export-windowsimage",but not succeed.