visualise data from CSV file from (GCS) Bucket to GDS

Hello guys,

I recently start to use data studio and Suprmetrics. I did connect all sources to GCS and now trying to visualise data in GDS but the problem that I can get only one field with all data in CSV file.

QUESTION: how can I separate data in CSV file to GDS fields that I can use in the report?

Thank you in advance!