Setting initial value of the SegmentedControl

I have a SegmentedControl, and I want the first segment to be selected upon opening the application.
Tried different things, and no luck so far.
I will appreciate any help.
thank you.

In the Inspector pane for a SegmentedControl, click on the Edit button next to the label Segments in the Appearance section. In the dialog box there is a ListBox and in it is a Select column. Check the checkbox for the first segment.

Thank you, Frederick!
I very appreciate your help.

You’re welcome. Happy coding!