I have created a custom fieldtype that uses a multiselect box. However when I save the entry in the CMS, the following error occurs
A Database Error Occurred
Error Number: 1054
Unknown column 'Array' in 'field list'
UPDATE `exp_channel_data` SET `channel_id` = '27', `field_id_108` = Array, `field_id_109`...
Any suggestions? I have checked the Multiselect fieldtype within EE and my code looks OK (I think)