# Weekend Project 1 > Solidity BootCamp 2023Q1 @ enconde.club :::info #### Table of Contents [TOC] ::: ## Tasks * Form groups of 3 to 5 students * Interact with “HelloWorld.sol” within your group to change message strings and change owners * Write a report with each function execution and the transaction hash, if successful, or the revert reason, if failed ## Contact and Developers > Add contact here. - [David E. Perez Negron R.](mailto:david@neetsec.com) Github: @P1R ## References \[1\] Encode Club Solidity Bootcamp , "Lesson 4 - Interfaces and external calls", https://github.com/Encode-Club-Solidity-Bootcamp/Lesson-04#weekend-project, 2023.