double layer of a!forEach

Question

for exmaple: 
 value:fv!item.value, 
 saveinto:{a!save(target:ri!value,value:a!forEach( 
 items:local!rule, 
 expression:if( 
 o utside fv!item.value=inside fv!item.value, null,null 
 ), 
 Then how i express? 
 ))}

gayathris0003 · Accepted Answer

If you need to nest an a!forEach() inside another a!forEach() and want to refer to the outer fv!item , you can either put it in a local variable before calling the second a!forEach() or put the inner call in a separate rule and pass in fv!item via a rule input. For example:

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a!forEach ( 
 items: { "January" , "February" , "March" }, 
 expression: a!localVariables ( 
 local!month : fv!item , 
 a!forEach ( 
 items: { 1 , 15 }, 
 expression: local!month & " " & fv!item 
 ) 
 ) 
 )

The above expression returns a three item list containing {"January 1", "January 15"} , {"February 1", "February 15"} , and {"March 1", "March 15"}

double layer of a!forEach

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