给单位添加无图标被动技能的函数，可以帮我看一下对不对

kimonline

[jass]//先把所有被动技能放进一本魔法书内（A001） ，并且将所以技能设定默认等级下不起作用,在地图初始化时运行该函数
function Init takes unit u returns nothing
call UnitAddAbility(u,A001)//给单位添加   
call UnitMakeAbilityPermanent (u,ture,AOO1)  
call SetPlayerAbilityAvailable(GetOwningPlayer(u),A001,false)
endfunction


//主要函数,修改被动技能等级，使其生效
function AddBonus takes unit u, integer whichability ,integer abilitylevel returns nothing
call  SetUnitAbilityLevel(u,whichability,abilitylevel)   
endfunction

//移除被动技能效果
function RemoveBonus takes unit u, integer whichability  returns nothing
call SetUnitAbilityLevel(u,whichability,0)   
endfunction