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[VB.Net] setting an object to nothing and including references?

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class myclass
end class

module Globals
public myobjects(100) as myclass
end module

class form1
sub dostuff()
myobjects(5) = new myclass
? dim newobject as myclass = myobjects(5)
? newobject = nothing
? myobjects(5) = nothing
end sub

the 3 lines with ? are in question, when i declare a variable to reference the instance of myobjects(5), i can do most anything to change the data through either variable, but Nothing seems to only apply to the specific variable.

so how to have 1 time of Nothing, be carried to all locations referencing?
i know i can add a variable to myclass instead, deleted as boolean, but seems sloppy

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