How does entity data modification work

The following doesn't seem to work, even though I can set the data in storage or what have you data modify entity @s Offers.Recipe[0] set value {maxUses:12,priceMultiplier:0.05f,buy:{id:"minecraft:emerald",count:1},sell:{id:"minecraft:stick",count:1}} It's just supposed to change the first recipe of a wandering trader to an emerald and a stick, but it does nothing, coming back as the data being the same so it made no change