M-script error while run it

After I made the mathematical equation by the simulink as see in attached photo, then i saved it , I made new script to identify the constants to the simulink then i wrote the sim order with the same name of the simulink project sim('project3test') as u see in attached photo and saved it in the same folder of simulink save file.

when i click run there is an error message in the command window appear as u see in attached photo, while the simulink project is run normally.

What is the probelm for this error and how can i fix it ?

Thanks in advance

Answer 1

[Walter Roberson]

You ask to sim() project3test . However if you look carefully at the first of your two images you will see that your real model is not project3test and is instead Project3test . Capitalization matters.

[Ahmed Samir]

Thank you very much for your help.