VBScript
Unless it is not explicitly stated differently on a release of a new version of the Persistent Variables, installing an update is very much straight forward.
Just download the new version and follow the steps described in 2.3 - Setup GSE Action
It is not necessary to delete the previously installed actionPersistentVariable.ase and actionPersistentVariable.vbs files before uploading the new ones to the SwyxWare database. The old files will just get overwritten.

By Tom Wellige