I've got a multi-screen app. The first screen is connected to a SharePoint form and the second screen just has input controls without a form.
My intention is to pass a few of the field values from the first screen to the second screen upon Save. I'm setting global variables from the first screen's Save button.
On the second screen I am setting the global variables as default for each of these fields. On the second screen the Save button calls a Power Automate flow and receives the field values from the second screen.
Everything is working except for one combo box field that is causing me issues. As you can see in the screenshot below, the Department field has been successfully sent from the first form on screen 1. But when the Save button is pressed and the data is sent to the flow it fails because Department appears empty. You can see from the highlighted line below - it's empty.

I'm selecting the Department using this:
cbDepartment.Selected.DepartmentDs
cbDepartment.Selected.DepartmentDs always appears empty until the user actually changes it manually.
The only other thing I doing is setting the DefaultSelectedItems property using the global variable I have:
gvDept
Why does cbDepartment.Selected.DepartmentDs come up empty? Is there a way I can get the value without having to select the combox box?
Thanks,
-Greg