How to find change in Pricing Condition Type value in VA02.

Hello Gurus,

need your help in below scenario.

Im my project we are using 2 pricing condition types, say 'A' and 'B' , while creating Sales Order.

so my requirement is like I need to create Z table with following fields.

1. Sales Order Number

2. line item

3. Date_A

4. Date_B

Whenever condition Type value is changed in VA02 , I need to maintain that date log into this Z table.

These fields should contain the latest updated date. 

I have done some R&D and found out  X Structure will contain Runtime Value and Y will contain old values.

Issue is that I am able to see only one table XKOMV[] for condition pricing . YKOMV[] is not there.

So how I am gonna compare new and old value for both condition type.

Please share your though on same.

Thanks in advance.

Regards,

Mayur.