ODP.net user defined custom object array to Stored Procedures

THis below code works fine as a single object(appTestRec r = new appTestRec();)  but when i convert this to array type (appTestRec[] rec = new appTestRec[2];)
getting error: Wrong number of type or argument.
Please help me conver this to Array type.
i have already made change at stored procedure level to accept Array
static void Main(string[] args) { //appTestRec[] rec = new appTestRec[2]; //r appTestRec r = new appTestRec(); //r.Array[0] = new appTestRec(); //r.Array[0].RISK_NAME = "test"; r.RISK_NAME = "test"; ////tbl.Value //rec[0] = new appTestRec(); //rec[1] = new appTestRec(); //rec[0].RISK_NAME = "test"; //rec[1].RISK_NAME = "test1"; OracleConnection con = new OracleConnection(); con.ConnectionString = "User ID=user123; Password ...