alter proc SetPermission @Kar_ID int,@CodeAmaliat int,@IsAllowed bit  
as  
begin  
 if not exists(select isallowed from mahdoodiat where Amaliat_ID =@codeamaliat and Kar_ID =@Kar_ID)  
  insert into mahdoodiat (Amaliat_ID,Kar_ID,isallowed)values(@codeamaliat,@Kar_ID,@isallowed)  
 else  
  update mahdoodiat set isallowed=@isallowed where Amaliat_ID =@codeamaliat and Kar_ID =@Kar_ID  
end