Reference a Range Name contained in a cell

Hi,

Hopefully somebody might be able to point me in the right direction on what I suspect might be an easy query but one to which I have been unable to find an answer over the past hour or so.

Similar to the INDIRECT() function that allows one to read a cell reference that is contained as a value within a cell, is there a similar function available that will allow one to pass a named range that is contained as a value within a cell to a required dialog.

In my case, I am trying to create a user input-dependent dropdown control where the named range (say ClientID) for the drop-down list is held in a cell say $c$30. However, when I set $c$30 as the input range in the control dialog, the drop-down list consists of a single item: ClientID, rather than the contents of the range to which ClientID refers.

Many thanks in advance once again.

Orson.