Global script in Visual Processes

I am trying to call a function defined in "Global Declarations" under "Standard Processes" > "Scripts" from a script element of my Visual Process.

I get an error saying that the function is not declared or it may be inaccessible due to its protection level.

It works fine when called from a Standard Process (either from pre process or post process script). Is the Global Declarations only for use within Standard Process? Is there an equivalent for Visual Process?

I don't want to duplicate script code in my visual processes. Is there a workaround?

Thank you!