EPM Rulescript - DataCopy Function

Hello,

I have a rulescript that copies a version to another version for our Budgeting Process which first sits in "Department Requested" tab and changes the status of the request to "Approved" and gets moved to that tab. We have encountered an issue where if 2 people are approving the request at the same time by accident, it gets deleted and doesn't get copied over to the "Approved" tab. The values become zero because the 2nd person who was approving it a millisecond later now has zero values to copy over. I am thinking of doing an IF function and if