D7.0.3 Events Pop-up Calendar - Time Limit

I want to limit users to adding events that only occur within the next seven days.

If a user tries to add an event that happens > 7 days, an error message will appear.

Can anyone point me in the right direction?

Also, adding events that happen in the past should be blocked too.

Does anyone know how to do this?  Is there a simple fix?

Is it possible to make this a requirement in the 'checker' section of the BxEventsFormAdd file?

'EventStart' => array(

'type' => 'datetime',
'name' => 'EventStart',
'caption' => _t('_bx_events_caption_event_start'),
'required' => true,
'checker' => array (

'func' => 'DateTime',
'error' => _t ('_bx_events_err_event_start'),
),

'db' => array (

'pass' => 'DateTime',

),

'display' => 'filterDate',
),

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