swf-version can be specified when using SDK 3.6? [ Error #1065: Variable JSON is not defined ]

I've been using playerglobal.swc of flash player 11 and SDK 3.6.

ReferenceError: Error #1065: Variable JSON is not defined

can be solved by setting -swf-version to 13. (http://forums.adobe.com/message/3933620#3933620)

However, swf-version is not available in SDK 3.6.

Can native JSON be used?

Otherwise, can com.adobe.serialization.json.JSON be used without name conflict?

JSON (from ...\flex_sdk_3.6\frameworks\libs\player\11\playerglobal.swc(JSON))

com.adobe.serialization.json:JSON (from ...\as3corelib.swc(com/adobe/serialization/json/JSON))