in the constructer of the other classes I have, I need to push the value in the stack but I can't get to it cuz I must have an instance to use it .I cant use static stack cuz every execution must...

public class Execution
    {
        public int structur;
        public Stack<int> pileProg;
        public Execution()
        {
            pileProg = new Stack<int>();

        }
/*example of classes I want to use:*/

public class Constant 
       {
        private string Name;
        private string Value;

       public Constant(string Name,string Value)
        {
       this.Name=Name;
       this.Value=Value;
       /*here I want to push the value in the stack */
         }
        public string name
        {
       get{return Name;}
       set{ Name=value;}
         }  
         public string value
        {
       get{return Value;}
       set{ Value=value;}
         } 
    }