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CNT_GETKEY _hContainer, _index, _key

_hContainer in Unique identifier of Int type - data container.
_index in Consecutive number of an item (from 1...) of array that was created by CNT_CNVTOARRAY.
_key out Value of key from a container.

The action reads the value of key of an item from data container, which is defined its consecutive number (parameter _index) and inserts it into the parameter _key.
The parameter _key must be the appropriate type.
The parameter _index may be a value in the range 1..._nr. Parameter _nr may be acquired by calling CNT_GETNR.

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