I lost my admin password and do not have any other account with admin right

How can I recover my password?

You can't do it from XStudio (hopefully or it would be a major security hole!).
You need to ask your database administrator to manually update the column user_password of the user admin in the tabletable_user with the value:
984F1197F84B21DDA2A631F72F9D082501B4FA1AA3798DC420A26ADE0B8792504325EBD701.
This procedure restores the default admin password: password.