Send data table into Write JavaScript block

https://docs.zerowork.io/using-zerowork/using-building-blocks/write-javascript says “Custom looping through existing rows of a table within your code block in order to update data (as opposed to append) is currently not supported.”

i want to set up a dynamic Start Repeat such that i can access two different rows of the table at the same time. right now, i can use variables to carry over the values from row X to be available when i am processing row X+1, but once i’m processing row X+1, i cannot access row X anymore. i’m guessing that if i can send an entire data table into the javascript block, then i will be able to jump around between different rows however i want.