zurick upgrade: workflow to start EC2 failed

[Cherly]

we have a workflow to start amazon ec2 server but it stop working

error TypeError: undefined is not a function.

script 

// Workflow activity definition handler class

//

// Implement activity definition handling in the onExecute method

//

// Implement any event handlers for the activity definition as a method named 'on[event_name]'

//     For example, to handle the 'cancel' event, implement an 'onCancel' method

//

workflow.includeActivityDefinition('Execute EC2 Action');

var Change_StateActivityHandler = Class.create();

Change_StateActivityHandler.prototype = Object.extendsObject(Execute_EC2_ActionActivityHandler, {

    initialize: function() {

        Execute_EC2_ActionActivityHandler.prototype.initialize.call(this);

        // constants        

        this.error_noInstance      = gs.getMessage('There was no instance selected for action');

        this.info_RebootReturnFail = gs.getMessage('The action RebootInstances failed');

        this.info_RebootReturnPass = gs.getMessage('The action RebootInstances succeeded');

        this.RebootInstanceValue   = 'RebootInstances';

    },

    _getParams: function() {

        // get instance(s), stop activity if it does not exist

        if (gs.nil(this.js(activity.vars.instances))) {

            this.setResultFailed(this.error_noInstance);

            workflow.error(this.error_noInstance);

            activity.state = 'finished';

        }

        else

            this._addInstanceSet();

    },

    processResponse: function() {

        if (this.action == this.RebootInstanceValue)

            this._processReboot();

        else

            this._processStartStop();

    },

    _processReboot: function() {

        var XMLUtil = GlideXMLUtil;

        var doc = XMLUtil.parse(this.response.getBody());

        if (doc) {

            var retVal = XMLUtil.getElementValueByTagName(doc, 'return');

            if (!retVal) {

                this.setResultFailed(this.info_RebootReturnFail);

                workflow.error(this.info_RebootReturnFail);

                activity.state = 'finished';

            }

        }

    },

    _processStartStop: function() {

        var XMLUtil = GlideXMLUtil;

        var instances = [];

        var doc = XMLUtil.parse(activity.output);

        if (doc) {          

            var instancesSet = XMLUtil.getElementByTagName(doc, 'instancesSet');

            var instancesXml = XMLUtil.getChildrenByTagName(instancesSet, 'item');

            for (var x = 0; x < instancesXml.size(); x++) {

                var instanceXml = instancesXml.get(x);

                var instance = {};

                instance.instance_id           = '' + XMLUtil.getChildTextByTagName(instanceXml, 'instanceId');

                instance.private_dns           = '';

                instance.dns                   = '';

                instance.ip_address            = '';

                var instance_state             = XMLUtil.getChildByTagName(instanceXml, 'currentState');

                instance.instance_state        = '' + XMLUtil.getChildTextByTagName(instance_state, 'code');

                instance.instance_xml          = '' + XMLUtil.toString(instanceXml);

                instances.push(instance);

            }

        }

        workflow.setVariable('instances', instances);

    },

    _addInstanceSet: function() {

        var instances = this.js(activity.vars.instances);

        if (!gs.nil(instances)) {

            var instances_arr = instances.split(',');

            for (var i = 0; i < instances_arr.length; i++)

                this.params['InstanceId.' + (i + 1)] = instances_arr[i];

        }

    },  

    type: 'Change_StateActivityHandler'

});

[Dr Atul G- LNG]

As it is upgrade issue log a now support case.