/// <summary>
        /// Set value field
        /// </summary>
        /// <param name="FieldName"></param>
        public void SetValueField(string FieldName)
        {
            SLPivotFieldType pft = new SLPivotFieldType();

            pft.IsNumericIndex = false;
            pft.FieldName      = FieldName;
            pft.FieldType      = SLPivotFieldTypeValues.Value;
            this.FieldSettingInstructions.Add(pft);
        }
        /// <summary>
        /// Set row filed
        /// </summary>
        /// <param name="FieldIndex"></param>
        public void SetValueField(int FieldIndex)
        {
            SLPivotFieldType pft = new SLPivotFieldType();

            pft.IsNumericIndex = true;
            pft.FieldIndex     = FieldIndex;
            pft.FieldType      = SLPivotFieldTypeValues.Value;
            this.FieldSettingInstructions.Add(pft);
        }