How to use the vlocity.namespace function in vlocity

grunt.registerTask('runApex', 'Run Anonymous Apex specified by option -apex', function() {
        var self = this;

        var done = this.async();

        var properties = grunt.config.get('properties');
        
        var vlocity = new node_vlocity({
          username: properties['sf.username'], 
          password: properties['sf.password'], 
          vlocityNamespace: properties['vlocity.namespace'],
          verbose: grunt.option('verbose'),
          loginUrl: properties['sf.loginUrl']
        });

        vlocity.checkLogin(function(res) {
            vlocity.jsForceConnection.tooling.sobject('DebugLevel').find({ DeveloperName: "SFDC_DevConsole" }).execute(function(err, debugLevel) {

                var thirtyMinutesLater = new Date();
                thirtyMinutesLater.setMinutes(thirtyMinutesLater.getMinutes() + 30);
                var thirtyMinutesLaterString = thirtyMinutesLater.toISOString();

                vlocity.jsForceConnection.tooling.sobject('TraceFlag').create({
                    TracedEntityId: vlocity.jsForceConnection.userInfo.id,
                    DebugLevelId: debugLevel[0].Id,
                    ExpirationDate: thirtyMinutesLaterString,
                    LogType: 'DEVELOPER_LOG'