Alternatively, it may be that you don't actually need the pass-in field. As a simple example, say you want to write a 1 to the pass-in field if the respondent's answer to a numeric question is greater than 4. Then later you want to use the value in the pass-in field to determine whether to skip a respondent. In a situation like this, you could instead rework the skip to simply read from the numeric question directly and ignore the pass-in field entirely.
Does this offer some insight? If you can tell me more about how you want to use the pass-in field, I might be able to offer some more specific help.