Import external hours to obtain team's productivity


I am trying to obtain team’s productivity in JIRA by calculating this productivity as the story points completed between hours spent on the sprint/delivery.

The problem is that hours spent are not going to be obtained from the JIRA project but from an external application manually (not compatible with JIRA).

I wanted to know if there is a way to import the external application hours into the report in eazyBI and create a calculated measure that divides the story points by the imported external hours.

Thank you very much in advance