# Source URL: https://dev.epicgames.com/documentation/en-us/uefn/procedural-building-template-in-unreal-editor-for-fortnite
# Local doc: epic-docs/documentation/en-us/uefn/procedural-building-template-in-unreal-editor-for-fortnite.md
# Section: Verse Performance
* set OptionalArray := for(I := 0 .. ArraySize-1):
false
Verse Library
verse
12 Verse Performance
Uses a for loop to initialize a boolean array with default false values.
extracted-snippets/documentation/en-us/uefn/procedural-building-template-in-unreal-editor-for-fortnite/12-verse-performance.verse