Error While Writing A List Into An Xlsx File

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C#

OK, I have some code and I need to write a list<> of integers onto an xlsx file. But am getting an error.
Here is the code.

string fileName = @"C:\rhandx.xlsx";
 string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" +
          fileName + ";Extended Properties=\"Excel 8.0;HDR=NO;\"";
OleDbConnection con = new System.Data.OleDb.OleDbConnection(connectionString);
con.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.Connection = con;
foreach (int coord in rhandlist)
{
    cmd.CommandText = ("INSERT INTO TABLE [SHEET1$] VALUES (coord)");
    cmd.ExecuteNonQuery();
}
con.Close();

rhandlist is a list with unknown no of int's. But I get an error saying my insert statement's syntax is wrong.