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## Description
You could make validations based on text length
## Code
```ruby
require 'axlsx'
p = Axlsx::Package.new
wb = p.workbook
wb.add_worksheet(name: 'Basic Worksheet') do |sheet|
sheet.add_row ['First', 'Second', 'Third']
sheet.add_row ['Some', 'text', 'to validate']
sheet.add_data_validation('A2:C2',
type: :textLength,
operator: :lessThan,
formula1: '10',
showErrorMessage: true,
errorTitle: 'Text is too long',
error: 'Max text length is 10 characters',
errorStyle: :stop,
showInputMessage: true,
promptTitle: 'Text length',
prompt: 'Max text length is 10 characters')
end
p.serialize 'text_length_validation_example.xlsx'
```
## Output
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