ok thank you! it ran to completion, however I dont want the GB or MB printed which is why I put it as a value: any way I can only print the 1.0 in mxs and not the GB? I still need the letters GB/MB but cannot have them in the gmetric CLI. maybe use an array to store GB/MB? 
'/cache-m/usr/cachesys/mgr/' => {
                                            'free' => '91.7',
                                            'sz' => '1.0',
                                            'mxs' => {
                                                       '1.0' => 'GB'
                                                     },
                                            'dfree' => '2.2',
                                            'avail' => '917'

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