I have created a report and am looking to change a value of one of the fields through VB6...can this be done?

I was looking to do something like this (I know this is wrong but something along these lines) the field in CR is called for example: USERID

Report.Field.USERID = "WhateverValue"

I know this is wrong but do you get what I mean? If not please ask and I will try and explain in more depth... If it can be done what would the code be?

Thanks