Nuxeo CAP 5.5

I try not to display the user personal workspace in the “My workspaces” block (gadget) of the Dashboard.

In order to achieve that, I thought I could modifiy the NXQL request in :

But this doesn't work : the “My workspaces” gadget displays a " No data received from server: 500 Error” message.

Note that this NXQL request works in the “Advanced search” NXQL field, that's why I tried it