How to control a movieclip that was loaded using loadclip() in AS2?

This is in AS2. I'm loading an external AS2 swf using the loadclip function.

开发者_运维知识库But I don't know how to call its gotoAndPlay or stop functions. How do I reference to them?

When I trace the loaded file it says

_level0.mcContainer.instance42

The object path always varies every load like now it's instance42 sometimes it becomes instance7 or instance10.

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Ok. I was wrong. instance42 refers to the anonymous instances inside the loaded swf. upon loading the loaded clip replaces the container movieclip, hence I can refer to the loaded swf using mcContainer.