How do I use Custom_Model_Data with 1.21.4?

I have this command and its not showing up as a function in game 
give @p netherite_sword[item_model="main:legendary_wither_sword",item_name='{"bold":true,"italic":true,"strikethrough":true,"text":"LEGENDARY WITHER SWORD"}',enchantments={levels:{"minecraft:looting":3,"minecraft:sharpness":5,"minecraft:sweeping_edge":3}},lore=['{"italic":true,"strikethrough":true,"text":"You Feel it Eating Away At Your Soul...."}']] 1