How can we enable Actual Start Date and Actual End Date in Journey new task page via VBCS.

We are trying to enable Actual start Date and Actual End Date fields in Journey
under the tasks pages(both Edit and New task),so to achieve this we have enabled them with below constants
through VBCS in journey-task-details page.

1.showActualStartDate
2.showActualEndDate

But after publishing, the above mentioned changes are visible only in Edit Task page not in the new task page.

so do we have to enable some other variable/constant to see the above mentioned fields in New task page?

Navigation→ Workforce Administration→journey→search an employee →Add task→ create atask