[SOLVED] Html Canvas to sending value and reading value

Data management
1

hello , everyone, i want to use HTML Canvas Widget to build selfdefinite widget for reading and sending value to the variables in my device in ubidots. But it doesn’t work. Have you guys succeeded? If yes, please give me your code as a according. Thank you very much?

2

Greetings, please refer to the articles below as reference for your project:

Regards