Index is outside the given range

[Yna_Db]

You can see these links:
http://dynamoprimer.com/en/07_Code-Block/7-2_Design-Script-syntax.html
http://dynamobim.org/help-center/

Dynamo DesignScript Learning Resources

Since the question keeps appearing on the forum I thought I would create a dedicated topic so its easily searchable. DesignScript is Dynamo’s native scripting language and is similar to C# and Python. I would recommend any Dynamo user to learn the basics as it can significantly enhance proficiency. Here are some great resources for those interested in learning: A basic overview of DesignScript: http://dynamobim.org/wp-content/links/DesignScriptGuide.pdf Detailed DesignScript documentation: …

DynamoDS/DesignScript/blob/master/LanguageSpec.md