Сравнение файлов с помощю WinMerge. Как правильно задать параметры?

If( 1 <> ShellExecute( "C:\Program Files\WinMerge\WinMergeU.exe",  $LocalCopyPath &' '& $PathToOldPreferencesFile ) ) Then ;;; Start the comparison "Preferences" with WinMerge
		$LocalVerChromeError += 1
		_FileWriteLog( $LastFoundVerErrorsPathInServer, " If( 1 <> ShellExecute( $PathToLocalWebDataFile, $PathToServerWebDataFile ) ) Then ;;; Start the comparison 'Preferences' with WinMerge" )
	EndIf
	Sleep( 1000 )

ShellExecute( "C:\Program Files\WinMerge\WinMergeU.exe",  '"C:\Users\maxi\Desktop\Das Boot.txt"' &' '&  @DesktopDir & '\Submarine.txt' ) ;;; Start the comparison "Preferences" with WinMerge

ShellExecute("C:\Program Files\WinMerge\WinMergeU.exe",  '"' & @DesktopDir & '\Das Boot.txt" ' & @DesktopDir & '\Submarine.txt' )

$sWinMerge_Exe = @ProgramFilesDir & '\WinMerge\WinMergeU.exe'

$sFile1 = @DesktopDir & '\Das Boot.txt'
$sFile2 = @DesktopDir & '\Submarine.txt'

ShellExecute($sWinMerge_Exe, StringFormat('"%s" "%s"', $sFile1, $sFile2))