Unable to handle the iframe element

Dear concern,
I have faced a problem while handle the page control which is available in iframe. Katalon shows that object not found in page.I have checked all the object to find the button control element in page like xpath, id . But katalon unable to handle those

1. wrong sub-section if something is not working, it does not mean it’s bug
2. http://forum.katalon.com/discussion/9337/tip-my-test-is-broken-nothing-works-please-help-me

Have you set up your objects? If so, make sure you identify the iFrame as the parent for any objects within.