How to check logs for Azure Database for PostgreSQL

I am not able to access the below querystore views in the log analytics workspace for flexible server.

query_store.qs_view
query_store.query_texts_view
query_store.pgms_wait_sampling_view

I already set the below parameters 

pg_qs.query_capture_mode
pgms_wait_sampling.query_capture_mode

But however i am not able access these views in Custo Query,

Appreciate your help.

Regards

UV