Make the value in field disappear

Hi,

Are you saving the values entered in fisrt tab in local variable or ri?

You can assign the entered values null(saveInto) on click of the other tab

Hi Radha,

You can explicitly make those values null on the tab change in the saveInto of the button or link (whichever you are using to navigate to other tabs) and should also consider showing the user a warning for losing all the data if they navigate away. That way, you should be able to achieve what you are looking for. 
Tip - Consider using buttons instead of links if you are looking forward to showing confirmation dialog before the user navigates away from the screen as the link will submit the form (if called inside a process model).

Thanks,
Harshit