Hi,

I'm designing screens for an HMI Unified panel, and currently, I have "Screen 1," which contains a button. When pressed, this button displays a Screen Window object that shows "Screen 2."

In "Screen 2," there are buttons whose behavior I want to modify based on certain conditions. My approach is to have the button in "Screen 1" update an array that is defined in a global module. Then, in "Screen 2," I import the same global module and attempt to access that array when a button is clicked.

However, from my understanding, importing a module essentially inserts a copy of the code where the import statement is used, meaning the reference to the array is not consistent between where I set its values and where I read them.

How can I define a globally accessible variable in Unified RT, ensuring it can be referenced anywhere in the system?

Definition of the JS module and the array:

Code in "Screen 2" for the Button n.2:

I'm currently using TIA Portal v18 and the software listed below:

Thank you.