Code Block doesn't give function

Hello,
Could you please advise how can I get a function from the Code bock ? They always give nulls if not connected in contrast to basic dynamo nodes
Dynamo is 2.0.3.0

DesignScriptDocumentation.pdf (705.5 KB) designscript-final.pdf (1.5 MB) DesignScriptGuide.pdf (3.7 MB) Dynamo_language_guide_version_1.pdf (1.6 MB)

@m.shcheblykin Why aren’t you using SortByKey ?