Crystal Reports Passing Subreport Parameters

OK guys, I have a report, and a subreport in it. The report has got some paramters, and the subreport has got paramters with the same name. I have written the following function to add parameters to the report, but I don't know how to pass parameters to the subreport. Help me.

private ParameterField addParameter(string name, string value)
        {
            ParameterField parField = new ParameterField();
            ParameterDiscreteValue parametedValue = new ParameterDiscreteValue();

            parField.Name = name;
            parametedValue.Value = value;
            parField.CurrentValues.Add(parametedValue);
            return parField;
        }

//And then I call the function like this
parFields.Add(addParameter("NameOfParameter", "value"));
//After Adding all the parameters I Do this
crystalReportViewer.ParameterFieldInfo = parFields;
//And all works fine, now help me about the part with the subreport parramteres pls

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