Katalon Studio not detecting the individual controls in WPF UI

As part of evaluating the tool, I have downloaded Katalon Studio and tried to test my Windows Desktop Application developed using WPF.
After start recording, only few of the controls are detected by the studio. I have a child window which has number of controls in it. The studio only detects the whole window and not the individual controls present in it.

Please help me to get the individual controls detected so that I can click/set text on them.