Use Indexes or server for speed .Net API

In the CR 8.5 runtime there was an option to set the Report Option "Use Indexes for Speed" at runtime via the report object in the following manner;

     crxReport.UseIndexForSpeed = True

I cannot find this option in the .Net API Guide or by searching the Object Browser in my .Net project.  Does this setting exist in the .Net API? 

It is very important for us to be able to set this at runtime and is pretty much a deal breaker if it is not available.

I am using v13.0.2000.0 of;

CrystalDecisions.CrystalReports.Engine

CrystalDecisions.ReportSource

CrystalDecisions.Shared

CrystalDecisions.Wnidows.Forms

Thanks, Brendan