C++ not sending structure values correctly to Java server

[Avinash Dongre]

I have following IDL.

struct ColumnValue {
     1: optional bool   bool_val       // BOOLEAN
     2: optional byte   byte_val       // TINYINT
     3: optional i16    i16_val        // SMALLINT
     4: optional i32    i32_val        // INT
     5: optional i64    i64_val        // BIGINT, TIMESTAMP
     6: optional double double_val     // FLOAT, DOUBLE
     7: optional string string_val     // CHAR, VARCHAR
     8: optional binary binary_val     // BINARY
     9: optional BlobLocator blob_val  // BLOB
    10: optional ClobLocator clob_val  // CLOB
}

I am trying to send the list of this ColumnValue to Java Server as follows

for (int id = 1; id <= 100; id++) {

      std::vector<ColumnValue> cvList;

      cvList.push_back(ColumnValue());
      cvList.back().i32_val = id % 98;

      cvList.push_back(ColumnValue());
      cvList.back().i32_val = id;
}

But On Java side when I do following

ColumnValue.getI32_val()

I am always getting 0.

Thanks
Avinash