Checkbox doesn't get checked in knockout

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ASP.NET

Javascript

Knockout.js

I have a checkbox and click event for checkbox for updating data. When I click on the checkbox the data is updating but the checkbox does not get not checked.

This is my html code:

 <td>
<input type="checkbox" data-bind="checked: status, disable: status, click:$root.UpdateStatus" />
</td>

This is my script:

self.UpdateStatus = function (tblUsers) {
        $.ajax({
            type: "POST",
            url: 'SinglePageApp.aspx/UpdateStatus',
            data: "{statusVal: 'true',goalId: " + tblUsers.goalId + "}",
            contentType: "application/json; charset=utf-8",
            success: function (result) {
                alert(result.d);
            },
            error: function (XMLHttpRequest, textStatus, errorThrown) {
                alert(textStatus);
                alert(errorThrown);
            }
        });
    };

I want my checkbox to get checked when it is clicked. And after that put updated data after checkbox clicked.