the following variable are availables as output (where output name if the json file name with ' ' replaced by '_' and wihout '.json'):
${output}_failed_scenarios: number of failed scenario
${output}_undefined_scenarios: number of undefined scenario
${output}_pending_scenarios: number of pending scenario
${output}_passed_scenarios: number of passed scenario
${output}_failed_steps: number of failed steps
${output}_undefined_steps: number of undefined steps
${output}_pending_steps: number of pending steps
${output}_passed_steps: number of passed steps