worksheet names need to be limited to 31 characters

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/axlsx/workbook/worksheet/worksheet.rb b/lib/axlsx/workbook/worksheet/worksheet.rb
index 5284c475..a8846913 100644
--- a/lib/axlsx/workbook/worksheet/worksheet.rb
+++ b/lib/axlsx/workbook/worksheet/worksheet.rb
@@ -116,9 +116,11 @@ module Axlsx
     end
 
     # The name of the worksheet
+    # The name of a worksheet must be unique in the workbook, and must not exceed 31 characters
     # @param [String] v
     def name=(v) 
       DataTypeValidator.validate "Worksheet.name", String, v
+      raise ArgumentError, (ERR_SHEET_NAME_TOO_LONG % v) if v.size > 31
       sheet_names = @workbook.worksheets.map { |s| s.name }
       raise ArgumentError, (ERR_DUPLICATE_SHEET_NAME % v) if sheet_names.include?(v) 
       @name=v