Clear checkbox on page show

[bb78520]

I must be overlooking something simple. I wish to reset (Clear values) of a checkbox group on page show. I have tried thr following without success:

Apperyio("checkActive").val("");

Apperyio("checkActive").val("");
Apperyio("checkProspect").val("");
Apperyio("checkInactive").val("");

[She]

what do you mean by this? unchecking all the checked box?
to uncheck it:
code
Apperyio("checkBoxName").attr("checked", false);
/code