- correct return value in Execute method: returned alays False, should return True when successful
- Item property of collection did not work because incomplete object initialisation

Change-Id: I9b2e682afb21747766e918bf905e35d9485b751d
Reviewed-on: https://gerrit.libreoffice.org/17351Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>