Populate variables with dynamic values

DataTable dtTableDataDefinition = new DataTable();

OleDbDataAdapter adapter = new OleDbDataAdapter();

adapter.Fill(dtTableDataDefinition, Dts.Variables["User::dsDataDefinitionConfig"].Value);

            foreach (DataRow row in dtTableDataDefinition.Rows)

            {

                if (Dts.Variables.Contains(row["DataDefinitionKey"]))

                {

                    Variables vars=null;

                    Dts.VariableDispenser.LockOneForWrite(row["DataDefinitionKey"].ToString(), ref vars);

vars[row["DataDefinitionKey"].ToString()].Value = row["DataDefinitionKeyvalue"].ToString();

vars.Unlock();

                }

            }

                     Dts.TaskResult = (int)ScriptResults.Success;