NO, That is completely wrong. The code should be in strict capital letters as it shows on the rAthena guide.
It should look like this:
[ACCESSORY_IDs.ACCESSORY_BLOODWINGS] = "_bloodwings",
ACCESSORY_bloodwings = 1993
I believe it is necessary to have it like this, but it is entirely up to if the server is capable of handling it, because it may error, but it possibly wouldn't.