Sorry that my previous explenation was not strict enough. Undef is not thing I need becouse it would undefine values that have allredy have been defined. I would for example like to create the following structure, by adding keys "Alphakey2" and "Betakey2". 
Alphakey1
{
    =>Betakey1
    {
¨            {
            =>Gammakey1=1
            =>Gammakey1=2
            }
    }
}

Alphakey2
{
    =>Betakey2
    {

    }
}

[download]
If "Alphakey2" and "Betakey2" are not allready defined. If there allredy are keys named "Alphakey2" and "Betakey2" there should be no changes.

In reply to Re^2: Problems with HOHOH modification by Anonymous Monk
in thread Problems with HOHOH modification by tamaguchi

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