Class DataValidation

  
 // 
  
 Add 
  
 a 
  
 text 
  
 item 
  
 to 
  
 a 
  
 form 
  
 and 
  
 require 
  
 it 
  
 to 
  
 be 
  
 a 
  
 number 
  
 within 
  
 a 
  
 range 
 . 
  
 var 
  
 textItem 
  
 = 
  
 form 
 . 
 addTextItem 
 () 
 . 
 setTitle 
 ( 
 'Pick a number between 1 and 100?' 
 ); 
  
 var 
  
 textValidation 
  
 = 
  
 FormApp 
 . 
 createTextValidation 
 () 
  
 . 
 setHelpText 
 ( 
“ Input 
  
 was 
  
 not 
  
 a 
  
 number 
  
 between 
  
 1 
  
 and 
  
 100. 
” ) 
  
 . 
 requireNumberBetween 
 ( 
 1 
 , 
  
 100 
 ); 
  
 textItem 
 . 
 setValidation 
 ( 
 textValidation 
 );