Change textarea into input

the next line is a part of my testcase:
(Item)Set text - (Object) textarea_ember1535 - (Input) This is via Katalon
Question:
How to change textarea_ember1535 into input_ember1535?

From what I can understand, I believe you are trying to edit the Object/Locator of the textarea web element. You can do that by navigating to Object Repository (in the left side pane/Test Explorer) -> Page folder -> Element (in this case ‘textarea_ember1535’). Double click on that or Right-click and edit. You can edit its name, locator, etc. in the pop-up window that will be visible.

Sorry for the delay.
Thank you for your comment, but after editing, the “old” line is not changed.