Looks like the first 2 lines in the example are just setting up the coords, which you have already done. So skip to the 3rd line, and use the .plot(..., coords={'ITEM_NUMBER':['100179', '100186', ...] part.
Looks like the first 2 lines in the example are just setting up the coords, which you have already done. So skip to the 3rd line, and use the .plot(..., coords={'ITEM_NUMBER':['100179', '100186', ...] part.