Clearing previous data

Hi All,
I have some VC models where I am displaying input form in one layer and after submit(Submit Form) I am displaying output layer. The problem i am facing is when user goes back to input screen by back button (History Back) and again enters different data what he sees in the output layer is previous run data until it is refreshed. I want to clear this previous data in output layer immediately when he clicks submit on first input layer.
Also can we make submit button 'default' so that when users selects all input variables and presses 'ENTER' the form should get submitted. I could not find any such property for the button.
Has anyone done this? please help me on this, this is a valid and a bit urgent requirement.....

Hi Satish,
You got it correct. In first run users selects some input and presses submit to see output layer. Now he clicks on 'back' (history back) button to see previous input layer. He changes some parameters and submits to see 'previous' output layer containing graph and table data for previous selection until the data is reloaded from back end. Instead of this after pressing submit he should see blank chart and table and once data comes from back end it should get displayed.
I got the point to apply similar technique in blog to my 'Back' button on output layer. but the problem i am facing to 'Clear the output layer' is how should be graph cleared off the data and delete all the rows in table.
We can clear forms by storing blank values but to graph how should i clear the data it has?
If you have done this please advise me and correct my thinking if i am getting it wrong...
Also can you also let me know your thoughts about how can we make submit button get clicked when we press 'Enter'? Usually in HTML and other UI techs we make it 'default' so that it gets clicked when we press enter key....
waiting for your reply...
Thanks in advance,
Swapnil

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