Exclude folders from the backup

Hi,
I created backup plan and selected to backup "%user_owner%\appdata".
"%user_owner%" is a system variable that created via GPO with the value "%userprofile%".
This configuration is useful to backup the user profile to all the machines in the company.
For example - if ido user is using the machine "ido-pc" and the machine is in the backup plan, the folder "c:\users\ido\appdata" is back-up.
This system variable is working great, but it's not working when I try to exclude folders from backup using the same system variable.
If I use the path "c:\users\ido\appdata\XXX" the exclude is working, but I want to find a solution to use variable also in the exculde.
This is necessary because a lot of machines are stuck during backup in the folders :
c:\Users\XXX\AppData\Local\Google\Chrome\User Data\Default\Cache
c:\Users\XXX\AppData\Roaming\Apple Computer\
so I need to exclude those folders from backup.
Is there a Solution?

Ido