webutil download files from remote pc not working / locally its working fine

I have form with upload and download files.

I have defined  double click event trigger  with plsql code for showing the link 

CLIENT_HOST('rundll32 shell32,ShellExec_RunDLL '|| :global.picture_storage_path || :FIELDNAME);

global.storage_picture_path refers to the path c:\mypicfolder

when I double click from remote pc gives me nothing

when I created c:\mypicfolder in my local pc and copied the desired file manally in the folder
and tested the form it was successful,

how to make the transfer of the files from server to client maschine by webutil

with respect

Burim Ameti