Adding custom parameter to the ajax url, from the admin grid row issue

I am on the edit page with the following url:

https://local.magento/admin/hello_test/shipping/edit/shippingmethod_id/1/key/df70da11cddd2ee1c41aa67a8cbccf6d9403207740547719560dec30a3fd9ceb/

, where I loaded a custom grid. When I want to edit the price column and press the save button, I would like to pass to the ajax url an extra paramater, from the UI component XML.

This is what I tried:

    
        
            
                custom name
                true
                entity_id
                
                    
                        {i would like here to include the shippingmethod_id value from my edit page url}
                    
                    false
                
            
....

In the i can include static values(and it works), but i would like to include the value of the shippingmethod_id from the edit page url . Is that possible ? 🙂

Thnx