[AS3]Question i asked on every forum on the web and no answers

[FONT=“Trebuchet MS”]how can i access a movieclip via its instance name in a nother Movieclip class?

and a nother question how can i access a movieclip via its class name
in another movieclip class?

BTW i want to access the movieclip child

can you give me a sample code of both Questions?

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thanks