Get archive process instance data values

I need to get archive caseVariable ? which one of Rest API should I use ?

thanx in advance

Currently the REST API doesn’t provide access to archived case data.

The only solution I can think of right now is to build a small web application that will use the Bonita Engine API Java client library to provide access to the data using: http://documentation.bonitasoft.com/javadoc/api/6.2/org/bonitasoft/engine/api/ProcessRuntimeAPI.html#getArchivedProcessDataInstance(java.lang.String, long)

Thanx alot Antoine