Why do I keep getting this error?

Assets/chcarcterClasses/modifiedStat.cs(24,44): error CS0841: A local variable `att' cannot be used before it is declared

I keep getting this error no matter what I change in my script.... I really need help because it is driving me crazy that I can't get rid of it or test anything else I do because it's there.... can anyone find a typo or something I may have messed up in my script please and thank you.... the problem line I think is in bold.

 using System.Collections.Generic;     //create a bunch of classes that you will be using
 
 public class modifiedStat : baseStat {
     private List<ModifyingAttribute>_mods;     //a list that modifyes the stat
     private int _modValue;                        // the amount added to the base value from the modifiers
     
     
     
     public modifiedStat(){
     _mods = new List<ModifyingAttribute>();
     _modValue = 0;
     }
     
     public void AddModifier(ModifyingAttribute mod){
     _mods.Add(mod);
     
     
 }
     private void CalculateModValue(){
         _modValue =0;
         
         if(_mods.Count > 0){
             **foreach(ModifyingAttribute att in _mods);
             _modValue += (int)(att.attribute.AdjustedValue() * _att.ratio);**
     }
     }
 
         public int AdjustedBaseValue 
         {
          get{return    BaseValue + BuffValue + _modValue;}
         }
          public void Update()
         {
         CalculateModValue();    
         }
     
     
     
 public struct ModifyingAttribute {
     public Attribute attribute;
     public float ratio;
         
     }
     }