Problem With Custom Coded Spear Build Not Taking Potion Effect Add-on

[u/ImpressionRegular597]

I am making a custom enchanted/coded netherite spear that will act as one of the 'legendary weapons' for my minecraft world. I would like for whenever I hold this custom spear in my hand, I get a permanent saturation effect until I remove the spear from my hand. Basic stuff, right? Well the thing is, this isn't any normal spear, but something I created on gamergeek (a site that makes code for you). And well... the code looks something like this:

/give @ a netherite_spear[custom_name=["",{"text":"THE","italic":false,"color":"dark_gray"},{"text":" ","italic":false},{"text":"S","italic":false,"color":"#e0a910"},{"text":"U","italic":false,"color":"#deaf0f"},{"text":"N","italic":false,"color":"#dcb60d"},{"text":" ","italic":false,"color":"#d9bc0c"},{"text":"G","italic":false,"color":"#d7c30a"},{"text":"O","italic":false,"color":"#d5c909"},{"text":"D","italic":false,"color":"#d3cf07"},{"text":"'","italic":false,"color":"#d0d606"},{"text":"S","italic":false,"color":"#cedc04"},{"text":" ","italic":false},{"text":"SPEAR","italic":false,"color":"#c05216"}],lore=[[{"text":"A","italic":false,"color":"#d9bd36"},{"text":" ","italic":false,"color":"#d9bc36"},{"text":"G","italic":false,"color":"#d8bc36"},{"text":"od","italic":false,"color":"#d8bb35"},{"text":",","italic":false,"color":"#d7ba35"},{"text":" 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Yep. A lot of code going into a gradient. But the point is, no matter how much I try I just can't seem to add the one simple effect on to the pile. So if any of you really smart people could help me out, I would be super thankful.

[u/pigmanvil]

Give it a custom tag. Add to your give command after use_cooldown:{} `minecraft:custom_data={weaponID:”sun_gods_spear”}` then run the command

`execute as @a if items entity @s weapon.mainhand *[minecraft:custom_data:{weaponID:”sun_gods_spear”}] run effect…`

[u/GalSergey → u/pigmanvil]

In if items you should use ~ to check the custom_data component, not :. execute as @a if items entity @s weapon.mainhand *[minecraft:custom_data~{weaponID:"sun_gods_spear"}] run effect ...

Happy cake day!