Refresh UI after action performed

[power]

Friends,

I have one workflow , while creating alfresco site it will send approval request to siteAdmins,

let say request goes to Admin user.
When admin approves it  - it is available
When admin rejects it     - site should be deleted.

Above operation works fine. but I need to click "My Dashboard" link to refresh ( site is removed from list).
is there any idea in processdefinition file I can refresh page after remove action ?

performing action like below in processdefinition

bpm_package.children[0].parent.parent.remove();
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ideas??

[power]

anybody having idea about the things I discussed ?
for refreshing page? from process definition