[xwiki-users] Macro works in Groovy code |?

I want to set content of a document with #warning("My message") When code by Velocity: $newdoc.setContent('#warning("My message")') --> the code works but when code by Groovy <% ... newdoc.setContent("#warning(\"My message\")"); %> --> Error number 4001 in 4: Error while parsing velocity page MySpace.MyDocWrapped Exception: Lexical error: How to solve this error ?