how to pass parameter in subreports any idea?

i am using this code for the main report it is working super but what can i write for the subreports ???

MeetingManagement.frm_meet_preview frmReport= new MeetingManagement.frm_meet_preview ();

string path=Application.StartupPath+ "\\"+ "Report_met_prevw.rpt";

frmReport.ReportViewer.ReportSource =path;


//'The Parameters in the report

CrystalDecisions.Shared.ParameterField ParamterField =new CrystalDecisions.Shared.ParameterField();


//'A collection of parameters is a parameter field

CrystalDecisions.Shared.ParameterFields ParamterFields =new CrystalDecisions.Shared.ParameterFields();

// 'Every parameter has a descrete value

CrystalDecisions.Shared.ParameterDiscreteValue ParamterDescreteValue = new CrystalDecisions.Shared.ParameterDiscreteValue();


// 'Now each of these parameters should be added a meaning

ParamterField.ParameterFieldName = "mmid";



//'Each of these parameters should be given a starting value

ParamterDescreteValue.Value = hidtxt_mmid.Text.Trim ();

//'All these values should be added to parameter field

ParamterField.CurrentValues.Add(ParamterDescreteVa lue);



//'Finally all these parameters should be added to the report

ParamterFields.Add(ParamterField);

//'ParameterInfo has been given all the information needed

frmReport.ReportViewer.ParameterFieldInfo = ParamterFields;

//'frmReport.MdiParent = Me.Parent.FindForm()

frmReport.Show();