Well, what error message do you receive? According to the documentation, near the New more Tcl/Expect-like interface of $object->expect(), you can return 'exp_continue' symbol from your callback sub to continue matching with next callback.
Are you sure it won't be easier to use some SSH-related modules, for example, Net::SSH::Expect?
Sorry if my advice was wrong.

In reply to Re^3: regular expression matching in expect by aitap
in thread regular expression matching in expect by cmastays

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