Thanks for your update.
We have analyzed your query (“The Marker helper is not defined and gives me Compilation errors on using data source in the series”) and checked with simple sample using datasource and markers in the series. But we couldn’t reproduce the above reported issue and the sample is working fine. Please find the code snippet.
//Adding Candle series
.Marker(mr => mr
So could you please share your code snippet or sample which will be helpful on resolving the issue and provide you the solution.
Let us know if you have any other concerns on this.