Hi Ameegama,
Follow the steps below to change the hostname....
Steps
--> Click Admin on the toolbar.
--> The Data sources list opens.
--> Locate the data source that you want to edit.
--> Use one of these methods to begin the changes:
-->Click Edit data source to the right of the selected data source.
-->Click the linked name of the selected data source and click Edit.
--> Either method opens the Edit data source dialog box.

--> Select the required changes.
--> Click Save.
Thanks,
Nayab
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