Banglerun with a custom mobile app

hi @Gordon,
I added this typescript code to banglerun:

import { AppState} from './state';

declare var NRF: any;

function startStreaming(state:AppState):void{
 
    SetServices(state);
}


//Setto i servizi per preparare la connessione 
function SetServices(state:AppState){
  NRF.setServices({
    // activity services
    'f8b20001-89ad-4220-8c9f-d81756009f0c': {
        'f8b20002-89ad-4220-8c9f-d81756009f0c': {
        descriptio: 'duration',
        notify: true,
        readable: true,
        value: []
      },
      'f8b20003-89ad-4220-8c9f-d81756009f0c':{
          description: 'distance',
          notify:'true',
          readable: 'true',
          value: [0]
      },
      'f8b20004-89ad-4220-8c9f-d81756009f0c':{
        description: 'speed',
        notify:'true',
        readable: 'true',
        value: [0]
      },
      'f8b20005-89ad-4220-8c9f-d81756009f0c':{
        description: 'steps',
        notify:'true',
        readable: 'true',
        value: [0]
      },
      'f8b20006-89ad-4220-8c9f-d81756009f0c':{
        description: 'cadence',
        notify:'true',
        readable: 'true',
        value: [0]
      },


    },
    //HR services
    
    'f8b20007-89ad-4220-8c9f-d81756009f0c': {
        'f8b20008-89ad-4220-8c9f-d81756009f0c': {
        description:'HR',
        readable: true,
        notify: true,
        value : [0],
    }
  }       
});
UpdateServices(state);
}



    function UpdateServices(state: AppState): void {
      NRF.updateServices({
        // activity services
        'f8b20001-89ad-4220-8c9f-d81756009f0c': {
            'f8b20002-89ad-4220-8c9f-d81756009f0c': {
            descriptio: 'duration',
            notify: true,
            readable: true,
            value: [state.duration]
          },
          'f8b20003-89ad-4220-8c9f-d81756009f0c':{
              description: 'distance',
              notify:'true',
              readable: 'true',
              value: [state.distance]
          },
          'f8b20004-89ad-4220-8c9f-d81756009f0c':{
            description: 'speed',
            notify:'true',
            readable: 'true',
            value: [state.speed]
          },
          'f8b20005-89ad-4220-8c9f-d81756009f0c':{
            description: 'steps',
            notify:'true',
            readable: 'true',
            value: [state.steps]
          },
          'f8b20006-89ad-4220-8c9f-d81756009f0c':{
            description: 'cadence',
            notify:'true',
            readable: 'true',
            value: [state.cadence]
          },
    
    
        },
        //HR services
        
        'f8b20007-89ad-4220-8c9f-d81756009f0c': {
            'f8b20008-89ad-4220-8c9f-d81756009f0c': {
            description:'HR',
            readable: true,
            notify: true,
            value : [state.hr],
        }  
      }     
    });
 }

this code, when the app starts, set services, and when you press start button should start to update value. But when I run the code i obtain this error:

1 Attachment