Crystal SDK. How to determine if a parameter is a subreport parameter with auto-linking?

Hi

In CR2008 SDK I have the following code to determine what parameters a rpt file have:

for (int i = 0; i < doc.ParameterFields.Count; i++)
 {
ParameterField parameterField = doc.ParameterFields[i];
string parameter = parameterField.Name;
}

My issue is that when using sub-reports with parameters that have auto-linking these is also passed back to me with this code.

So far I have found that I can know if the parameter is from a sub-report is the parameterField.ReportName is not empty

That is good but I can't see how I can see if the paramter is autolinked or not

Any way to determine this?

/Rasmus