custom field validation - not validating

[twentyfortysix]

Hello,

I tried to add a custom field validation and it seams not be working well.

I tried simple rule for time (ie. 18:00) like ##:## and later regex like /^\d{1,2}.\d{1,2}$/
None of it seams to work, or the editor gets no response when the value is entered incorect

when I save the custom field settings I got this error:
Notice: Undefined variable: c in ../wp-content/plugins/custom-content-type-manager/controllers/edit_custom_field.php on line 120 Notice: Undefined variable: c in ../wp-content/plugins/custom-content-type-manager/controllers/edit_custom_field.php on line 120 Notice: Undefined variable: c in ../wp-content/plugins/custom-content-type-manager/controllers/edit_custom_field.php on line 120