Thank you v-lvzhan-msft,
I am trying to build live stream dashboard based on Heatmap visualization as explained here:
https://community.powerbi.com/t5/Best-Visual-Contest/Heatmap/cns-p/7551
I have got heatmap and it looks great, but with time it shows more and more data, when I actually need to represent dots only for last say 10 minutes.
Solution is: once per minute delete all existing rows from dataset and load new rows.
But I can not find the way to delete it.
I did not know, that Delete API has some issues for Live Stream, will try to communicate with HeatMAp Visualisation developers,
Thanks.