Changing the Convert Hilo Attribute

Hi,

I want to change the metadata in the Convert Hilo Attribute such as average => sum. But I am unable to as I get a message saying that it can't be modified. Is there another way to change it other than to replace it? It is because some methods of conversion isn't always by average.

Or do we get a choice of changing the default to something else when we actually convert?

Thanks.

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