Capturing checkbox selection in BSP

Hi,

I have two BSP pages(List of Alerts & Subscribe). In Subcribe page I am displaying Alert groups and categories in tree format as shown below.

Group1

Cat1 checkbox

Cat2 Checkbox

Group2

Cat1 checkbox

button_ok button_cancel

User selects categories and clicks on one of the button.

On click of button i want submit page and capture selected checkboxes on server side(in BSPs). Can somebody explaine me how to do this.

Thanks you

Regards

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