Zerene Stacker 1.04 License Key 14 Official

Another angle: maybe the user is a developer looking to integrate a license key system similar to Zerene's. But the query mentions "produce feature for:...", so perhaps they want to create a feature related to license key management for their product, using Zerene Stacker 1.04 as an example. But the mention of "14" could be confusing. Is it the 14th license key? Or a version of the license key?