How Expressions are accounted in DSWS request limits?

Hi,

For DSWS API i've found in the "DSWS user stats and limits" document this limitations for the getdata:

- Clients are required to stay under 10 million data points per month
- Maximum instruments per time series or snapshot request: 50
- Maximum datatypes per time series or snapshot request: 50
- Maximum instruments x datatypes cannot exceed 100

I was wondering how an expression is accounted, for example:

var expr = new DSInstrument("VOD(PL) + VOD(PH)", DSInstrumentProperties.IsExpression);

var datatypes = new DSDataTypes("X(MSVUSD)*x(MSFMCF)");

In the 1st example counts for 1 Instrument or 2?
In the 2nd example counts for 1 Datatype or 2?
What about data points count?

Thanks