cdatapriority has to be cdataPriority in linux.
Mysql under unix cares about capitalization.
for example
$tasks->values('id', 'number', 'created', 'staff_id', 'team_id',
'stafffirstname', 'stafflastname', 'teamname',
'deptname', 'cdatatitle', 'flags', 'cdataPriority');