global class MerchandiseInventoryClass {


   webservice static void ConverttoInventory(String[] merchandise_id)
   {
       //Convert Merchandise collection into Inventory Collection...

       Merchandise__c[] merchandise_collection = [SELECT ID,Author__c,Book_Title__c,Edition__c,Publisher__c,Total_Merchandise_QtyTotal_Qty__c,Status__c FROM Merchandise__c WHERE ID = :merchandise_id];


       Inventory__c i = new Inventory__c(); //Line 1
       List<Inventory__c> newInventory = new List<Inventory__c>();
       for(Merchandise__c m : merchandise_collection )
       {
           if(m.Status__c !='Fully Converted')
           {
           i.Author__c = m.Author__c ;
           i.Book_Title__c = m.Book_Title__c;
           i.Edition__c = m.Edition__c;
           i.Publisher__c = m.Publisher__c;
           i.Qty_Available__c = m.Total_Merchandise_QtyTotal_Qty__c;
           i.Merchandise__c = m.Id;
           m.Uninventoried_Qty__c = 0;
           m.Status__c = 'Fully Converted';
           newInventory.add(i);
           }
       }
       insert newInventory;
       update merchandise_collection;
   }

}