Dynamically set different schema for different packages

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Dear All,

We have 4 packages that we normally publish.
2 of them based on a schema , let's say X, and the other 2 on a different schema, let's say X_Y.

We have been looking for a way to automate this part since at the moment before publishing the last 2 packages we manually alter the schema from X to X_Y.
Undortumatelly we could not figure a way to do it.

Is there any possiblity to set it up?

Best,