Hi @markusk, unfortunately the issue you're running into is a limitation of the outgoing SQL dashboard APIs. You can create blank dashboards, but you cannot programmatically insert existing definitions. 

The good news is we're currently running a preview for import/export APIs that addresses precisely this. The import/export APIs allow you to create new or override existing dashboards with an existing definition. If you'd like access, please work with your account team to get set up. 

On the Lakeview front, parameter support is top of mind for us!