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Change Log

# Introduction

Compared to TRC-20 tokens, TRC-10 tokens face a user experience flexibility issue. In Odyssey 3.2, developers and their smart contract callers can interact with TRC-10 token via smart contracts according to the contract logic, do TRC-10 token transfers in smart contracts, giving them more control to implement their token in business scenarios. Unlike TRC-20 tokens, sending TRC-10 tokens is like transferring TRX in a contract, TRON developers added an interface specifically for TRC-10 transfers and queries in solidity.

**Example of transferring trc10 in a contract**


**TRC10 token type**
Odyssey_v3.2 defined a new type (trcToken) for TRC10 token, which represents the tokenId in a token transfer operation. TRC10 token can be converted to uint256 type and vice versa.

**TRC10 transfer in contract** 

**Query the TRC10 balance in the contract**

Odyssey_v3.2 defines a new tokenBalance function for TRC10 token balance query.
**TokenValue & TokenID**
Msg.tokenvalue, represents the token value in the current msg call, with a default value of 0. Msg.tokenid, represents the token id in current msg call, with a default value of 0.