Having trouble finding dynamic objects

I’m new to automated testing and am struggling with what is probably a basic task. I am trying to add some text to a dynamic input field, and I can’t figure out how to get Katalon to find that field. I assume I need to use Xpath Axes. Using the recorder, my script reads:
WebUI.setText(findTestObject(‘Page_PermissionsEd/input_acu_4544610000_firstName’), ‘basicuser3’)

The bold characters are dynamic. How can I make it search for ends-with or contains “firstName”?

Thanks in advance.

So it turns out this is incredibly easy. Simply open up the “Object’s Properties” tab, and change the Match Condition using the drop downs. For this case, I just selected “contains,” and used “_firstName” for the value.