how to create nested list

Question

hi, 
 i am using a!forEach to create a list of variants and wanted to return the iteration item as Array/List itself 
 for eg, 
 a!localVariables( local!testVariable: { "A", "B", "C;D" }, local!valuesAsArray: a!forEach( items: local!testVariable, expression: if( length(split(fv!item, ";")) > 1, split(fv!item, ";"), fv!item ), ), local!valuesAsArray ) 
 
 Above expression is returning results as {"A", "B", "C", "D"} 
 Instead i wanted the results as {"A", "B", {"C", "D"}}. 
 Any suggestions on how to achieve this

Stefan Helzle · Answer

Appian automatically flattens such lists. I do not know of a reliable way to get the result you are looking for.

Mike Schmitt · Answer

If we're allowed a little leeway on what the format of the resulting data can be, it's pretty easy to handle this using a list of maps:

Vyshnavi Naripeddi · Answer

Hi palanir043114 , a!localVariables(
 local!testVariable: { "A", "B", "C;D" },
 local!valuesAsArray: a!forEach(
 items: local!testVariable,
 expression: {split(fv!item,";")}
 ),
 local!valuesAsArray
) 
 Let me know if this works!!