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Now that you have deployed the Hello World smart contract on the Tron blockchain. You can interact with your contract by calling functions defined in HelloWorld.sol in Tron-IDE.

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Note

Enter the contract address (TAbsq7DzmrFriHZ5Vk2cK4npCcYPvtWhZ8) into ** At Address ** to call smart contract functions.

The contract contains two functions: `postMessage` and `getMessage`.

The `postMessage` function is state-changing because it changes the message variable within the contract. The calling of this function needs a signature and consumes energy. The `getMessage` function is read-only, it only returns the message variable (reading the contract, not changing the state) and no signature or resources consume is needed.

A successful call of `getMessage` returns the **_id_** and **_contract_result_** and the transaction receipt. The **_id_** is the hash of the transaction broadcasted to the blockchain, and the **_contract_result_** is the output of the function call. The `getMessage` function returns the variable message, it's an empty string in this example. You can make a change that by calling `postMessage`.

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You have successfully created, compiled, deployed, and interacted the HelloWorld smart contract on the TRON blockchain. Congratulations!