How to put INTENT_CONFIDENCE asserter as a global variable in Botium

My question is about how to set the INTENT_CONFIDENCE as a global asserter instead of put it all over the convos.

I tried it two ways in botium.json configuration file, but both are not working:

Thanks in advance for your help

within the "ASSERTERS" capability, I tried:

  "INTENT_CONFIDENCE": 100 -- I have done the same but with "100"/ "100 %"

and

  "ref": "INTENT_CONFIDENCE", 
  "val": "100" 

the error looks like

AppData\Roaming\npm\node_modules\botium-cli\node_modules\yargs\yargs.js:1133 else throw err ^

Error: Failed to fetch package botium-asserter-undefined - { Error: Cannot find module 'botium-asserter-undefined'