Dependant Dynamic Dates

Hi

I have sorted my tasks having dependencies, and they are now dynamic in that one task can be based on the other (+1 day) to move the date from first task to the second.
What I want to do now is finish it all off to make all of the tasks dynamic by when updating: so when i update task 1 (and task 2 is dependant on it) then the task 2 updates, and if there are tasks 3 and 4, they update too, constantly updating themselves to the change in the one dropdown, affecting all of the other dependant dates.

Easier to see!

https://project-22.bubbleapps.io/version-test/tasks?debug_mode=true

Thank you

Paul