passing a dimension of an array to a function

Hi there,
I am contacting you with this first thread.
I have read very carefully following thread.

http://www.excelforum.com/excel-prog...-function.html

It helps me to introduce my question, that I think it is at an upper level.
MY question is as follows.
Let’s suppose to have an array of two dimensions, ex

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,
Let’s suppose that I have to call a function, called FunctionA, and to pass the array
According to the post, I would have to call

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My question is: let’s suppose that I want to pass to the FunctionA the sole values of array (a,n) – where n is a number between 1 and b.
How can I pass this to the function.
I was thinking to something as

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and

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Please, has anybody a different solution for this ?

many thanks

hi MrReds, I hope I understood you right:

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