Custom fields - Fee Formula and Tax

If you have a custom field and it is a FEE field there are some options Discountable and Fee Formula.

Questions.

1. Discountable - I assume the discount is taken from the Event Discount Options and applied (ie Early Bird discount) to the Event and the Custom Field cost?
2. Fee Formula - I assume you can only use [FIELD_VALUE] x.-,+, and not any IF statement ie IF [FIELD_VALUE] > 1
3. Tax - There is no Discount Option in Custom Fields - So I assume it takes the tax amount from the Event Tax option. Is there anyway to change the tax amount on a custom field ie set it Zero or apply different percentage?

Hello

1. DiscountAble will only affect discount for custom field cost, not to the event cost. It will be calculated for:

- Members Discount
- Discount From Coupon Code
- Early Bird Discount

Please note that it will only have affect if the above discount type is set base on percent. If discount types above is by amount (for example 10$), it won't have any affect

2. No, it's not possible. You cannot use PHP command for fee formula

3. No, it's not possible. Tax is charged base on the Tax Rate you set for the event. It's not possible to have different tax rate for each custom field, it's too complicated to handle and something we won't support for in the extension

Tuan