How to return a data from custom command and to use it again in cypress

[jaredaltairletto]

I'm trying to create a custom command that will login to a user's page using this command's credentials. I have no idea how to do it. The data should be typed in this fields
All of the data (login, email, password) generated by faker

So i did this

And this

TypeError Cannot read properties of undefined (reading 'email')

[jaredaltairletto]

i'm new in this pls help me

[jaredaltairletto]

So it's a .cy.js bc idk after adding custom inside another custom it worked wrong
As i just started to do this.
I have 0 idea how it works I just type everything that came into my head

mb it will help someone