Browser pop up message

can you specify to me what are the commands for the browser pop up message like this:

image

i know that there’s a principle that the recorder have no capability to catch up this browser pop up messages.

Please try this:

if you mean showing a popup like this. Try
WebUI.executeJavaScript(“alert(‘your message’)”, null)

Ah, you are using Katalon Recorder, not Katalon Studio. I didnt notice it. I dont know Katalon Recorder at all. Sorry I dont have answer for you. I hpe somebody else can.