How to set the start index id when use osmosis command to produce a changes.osc.gz file?

In order to avoid the conflict id in the changes.osc.gz file and the tile server database. When i make an edit on my rails port, and use osmosis to produce a changes.osc.gz file, the index id of the nodes and ways are automatically generated by the osmosis command, how can i set them to start at a large index number?