Which one is better?
hs data modify storage spell_assembly:temp data.SelectedSpellID set from entity @s SelectedItem.tag.SelectedSpellID $function #spell_assembly:spells/spellcast_type_check with storage spell_assembly:spells Spells[{ID:$(SelectedSpellID)}]
or
hs $data modify storage spell_assembly:temp data.SelectedSpellID set value $(SelectedSpellID) $function #spell_assembly:spells/spellcast_type_check with storage spell_assembly:spells Spells[{ID:$(SelectedSpellID)}]