You can create an eCATT script in Silk Test Workbench, record or write additional VB.NET code and test, then transmit the test script to the SAP/R3 database for use in eCATT. In this case, Silk Test Workbench runs in a standalone environment (not started from eCATT), until the test script, project and related assets are passed to eCATT in a BLOB.