I am using Profile Search Plugin in my website and I am very ectited from this. I need a custom field type and I hope to help me with this. I need a checkboxes with a posibility to add subtype of each one. If a variant is chosen.. automatically show its subtypes if set. Do you understand me?
You can set it up so that, when any specific check box is selected, another field appears. These new fields, one for each check box value, should contain the sub-types for that check box value. What do you think?