When using the AIMMS PRO API documentation to implement a procedure call by means of a web request, the ProjectVersion property of JobConfig defines the version number of the application that the API has to use.
It is not possible yet to always use the latest version of an application from within a PRO API call. On the cloud it is possible to open the latest version of an application with the ‘tag/latest’ attribute, setting ProjectVersion as ‘tag/latest’ or ‘latest’ in the PRO API would be a nice addition. As of now, the API script needs to be changed with each new version of an application.