Exclude lines with zero value mail-tags from output

Hi, is it possible to extend the ‘Exclude lines with blank mail-tags from output’ feature to lines with a zero value? I have a large inventory form with zero as the default value (these cannot be blank by default as the + – buttons wouldn’t work) and want to exclude all zero values from the email output. I realise this would probably require some JavaScript on clicking ‘submit’, but I’m a complete novice to JS and jQuery so could someone possibly point me in the right direction? Many thanks.

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