Pushing Time Entries back into Asana with external timetracking tool (Hubstaff API)

Hi I’m completely new to API’s.

But I was wondering if anyone was able to push data back (time entries) back into Asana. Time entried that are recorded by an external Time Tracking tool (like Hubstaff) to populate the fields in Asana’s “Actual Time”.

In doing so would enable me to make the global reporting dashboards in Asana functional.

How can this be done? I’m maybe also looking for developers who can help with this kind of stuff.
Kind regards.