Show response without loading UIAlertView again on same UIAlertView while taking user input swift 3

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I am using UIAlertView to get user input. I want to add validation on user entered value. When a user enters the invalid value I want to show the response on same UIAlertView by changing alert message only without loading UIAlertView again. I don't want to show pop up again everything will be on the same Popup only.

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