Arguments are not passing down to the next workflow file

I am trying to have a main workflow file for my many other workflow processes. For all of the many workflow processes, there is a common variable that I want to have passed down within the invoking process. I have created an argument for that variable, once the first workflow is completed, the argument is not passed down to the next workflow. How do I make a common variable be passed down?

Check the documentation as you need to specify as an argument in the invoke workflow activity.

I have done that already but it still does not pass the variable through

Can you share your workflow ? I am sure it is an easy fix.

Thanks for your help, I have found the solution already. I needed to add a variable to the argument