Issue: Numbers with some special formats reads as date

col.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"math"
 	"strconv"
+	"strings"
 
 	"time"
 
@@ -53,12 +54,18 @@ func (xf *XfRk) String(wb *WorkBook) string {
 		fNo := wb.Xfs[idx].formatNo()
 		if fNo >= 164 { // user defined format
 			if formatter := wb.Formats[fNo]; formatter != nil {
-				i, f, isFloat := xf.Rk.number()
-				if !isFloat {
-					f = float64(i)
+				if (strings.Contains(formatter.str, "#") || strings.Contains(formatter.str, ".00")){
+					//If format contains # or .00 then this is a number
+					return xf.Rk.String()					
+				}else{
+					i, f, isFloat := xf.Rk.number()
+					if !isFloat {
+						f = float64(i)
+					}
+					t := timeFromExcelTime(f, wb.dateMode == 1)
+
+					return yymmdd.Format(t, formatter.str)
 				}
-				t := timeFromExcelTime(f, wb.dateMode == 1)
-				return yymmdd.Format(t, formatter.str)
 			}
 			// see http://www.openoffice.org/sc/excelfileformat.pdf Page #174
 		} else if 14 <= fNo && fNo <= 17 || fNo == 22 || 27 <= fNo && fNo <= 36 || 50 <= fNo && fNo <= 58 { // jp. date format