Pass version id in webhook

Hi Team,
I am trying to version id to my api method from squidex rule web hook. Basically, i need to compare the old value with new value in Rule, since i don’t see any help to do the same in Rule, i am trying to pass the version id to my api method and compare the old & new from code side.

Please help me with the way to pass version id in webhook call?

If you use liquid or Javascript it should be just event.version, otherwise EVENT__VERSION