I want my son to learn coding but he's not interested. How can I get him to be interested?

Which programming language did he start learning coding with? We find that visual programming languages with drag and drop interface and instant feedback loop work best with younger kids. Scratch is a good example. There's a screen on the left. You drag and drop the command blocks you want on the right. Hit a trigger button (usually green flag or space bar) and the child can instantaneously see on the screen what their piece of code did. Agree with Yuna best not to force him if he's not interested. May put it off programming for a long time.