Date picker not available for price calculation

Hello, it is an issue. It will be fixed in 8 hours.

Fixed in 1.1.4.

Hi @wckalkulator,
Thanks a lot, now it works.
I’ve just installed new version and I’ve tried this operation with these variables but it gives me this error. Is it an issue or I can’t do that?
https://ibb.co/6s4ngq4
https://ibb.co/j5Dwh1q

{end_date} and {field} has a price of the field (empty in your case), but not a date.
I’m working right now on v.1.2, which adds many new features. I think it would be better to use Range Date Picker in the next update. Range Date Picker will have both price and “days between dates” parameter to use in a formula.

Development version 1.2 of this plugin is available at GitHub https://github.com/piatkowski/wckalkulator/tree/dev