Editable list on section page - add event handler on the value of the control is changed

Hello Community,

I have custom section with editable list designed based on solution described on post 

https://community.creatio.com/questions/editable-list-section-page

Now i'm looking possibility to add event handler on the value of the control is changed.

Let's look example of BaseLookupConfigurationSection/Field sales rules Lookup (because this is a similar case and similar schema code) :

Example scenario is to calculate End date after change Start date but before save record.

I see that attributes dependiencies doesn't work on section schema.

Can i inherite method somehow ConfigurationGrid.onUpdateItem  or do it in different way ?

Thanks,

Marcin Kott