plot graph without blank values

Hi there,

I?m trying to obtain a plotted graph from a dynamic range (attached file, tab "SELECT") which is derived from another tab (tab "INPUT".
The cells with ?? as value (e.g. H19) are plotted by Excel as 0, whereas I want Excel to neglect them (not plotted in the graph).

Deleting the formula from the cells would do the trick, but I don?t want that as the graph need to be used for dynamic inputs

Does anybody know how to overcome this?

Kind regards,
Niels