The type or namespace name `R' could not be found. Are you missing an assembly reference?

[UnParKs]

When I call se execute_code to return the active scene name,there is an error"
COMPILATION_FAILED
Line 16, Column 7:
The type or namespace name `R' could not be found. Are you missing an assembly reference?

[Winlifes]

Thanks for the report! To reproduce this we need a few more details:

1. The exact snippet you passed to execute_code — please paste it in a fenced code block so whitespace and characters are preserved:

   // your snippet here, including any `using` lines

2. Which MCP client you used (Claude Code / Cursor / Codex / other). Some clients normalize quotes or strip backticks before the request reaches execute_code.

3. Unity version and Funplay package version. We just shipped v0.3.1 — please update if you can (it has unrelated fixes for Unity 6000.3+ compile errors and a domain-reload bug). If the R error still reproduces on 0.3.1, the snippet above will tell us why.

Quick note on the error message: the name `R' formatting is just Mono's style of quoting — it means the compiler is literally looking for a type named R. The most common causes are a generic like Result<R> where R was never declared, or a stray identifier that got introduced by client-side text mangling. We can confirm which once we see the snippet.