You can just retrieve them as below, which will get their current value at the time of the save. 

const val = await request.$context.AttributeName;

Alternatively you could use a change request handler, which gives you both the new and old values as properties of the request. See https://customerfx.com/article/responding-to-an-event-when-a-field-is-changed-on-a-creatio-freedom-ui-page/

Ryan

Ryan Farley writes:

You can just retrieve them as below, which will get their current value at the time of the save. 

const val = await request.$context.AttributeName;

i ' m Querying Data Using Filter Conditions via the Model Class in the save handler request . that s whey i only get the old value..

How can i use the change field event request handler in the save request handler??

If you are looking into the direct way to get changed attributes values in the SaveRecordRequest - there is none documented on our side. But you can use HandleViewModelAttributeChangeRequest where request has the oldValue and value properties, save the original values of needed attributes into the separate parameters and use these parameters in your task.