lisp to change registry key

[jim78b]

hi as I own autocad mech 2013 and there is the bug of the fact that every time you do dxfout changes the previews in explores resources and no longer become visible the dwg files; I wanted to ask if you could create a lisp that allows you to change the value as in the link I put in 1.
hkey_current_user\software\autodesk\autocad\r19.0\acad-b005:409\profiles\<<acadmpp>>\dialogs\select file - previewvisible =1</acadmpp>This I wrote is my path, in fact every time I do the dxfout command changes the previewvisible registry key in 0 and I have to go manually to return it.
I would only feel a comfortable lisp to be launched in need

I put the link to the resolution:http://blogs.rand.com/support/2014/03/autocad-2014-no-preview-in-the-select-file-open-dialog.htmlThank you.

 

[rpor66]

(defun c:setpreview()
(vl-load-com)
(vl-registry-write "hkey_current_user\\software\\autodesk\\autocad\\r19.0\\acad-b005:409\\profiles\\<<acadmpp>>\\dialogs\\select file" "previewvisible" 1)
)</acadmpp>

 

[jim78b]

but who are you! Thank you very much!