Run Simulink Model on Arduino board using Simulink arduino hardware support Package

I'm using MATLAB R2019b and trying to upload blink program to an arduino Mega 2560 board. I'm following this MathWorks tutorial:

https://la.mathworks.com/help/supportpkg/arduino/examples/getting-started-with-arduino-hardware.html

I created a blank model, and included the blocks as indicated in the referenced page. However, when trying tu upload the model to my arduino board, I was unable to find the Configuration parameters dialog. In my menu bar there is no such option as Model Configuration parameters. Hence I've been stuck with this problem.

I would appreciate if someone coul help me to get this simple model running in mi arduino board