in_Config and Config?

What is the difference between “Config(“System 1 URL”).ToString” and “in.Config(“System 1 URL”).ToString” ?
When I import Arguments some work as “in.Config” and some work as “Config”…

That is based on the arguments you have @jnam28

If the argument is Config, it will work

else when the argument is In_Config, then this should work

@jnam28 To add to the previous answer.
I’m guessing this question is particularly about the REframework, most likely the Academy assignments?
Config is the variable whereas the in_Config is the attribute.
If you’re working within the same workflow then using the variable would be enough, but if you’re using workflows outside the scope (like in the case of invoked workflows) of the of the Variable then you’d need an attribute.