Link Dimensions in SAP Analytics Cloud Application Designer

Hello together,

In my Analytics Application I want to filter Data in two charts.

These charts get their data from different models (both excel files). Because of that I want to link the models via "link dimension" like its possible in a normal SAC Story.

How do I achieve this via scripting/ other options?

Thanks in advance

Mike

PS: I tried to use the Chart.getDatasource.setDimensionFilter() function but by default I can only choose from the dimensions of the datasource used in the Chart and no other data sources.