How to move to dashboard after click button?

[longlong]

Hi everyone,

I define own "moveToDashboard"  in workflow-model same as (File: taskctm-model.xml):

                <constraints>
                    <constraint name="my:moveToDashboard" type="LIST">
                        <parameter name="allowedValues">
                            <list>
                                <value>GoToDashBoard</value>
                            </list>
                        </parameter>
                    </constraint>
                </constraints>

 And custom sequence-flows to workflow definition (File: taskctm.bpmn20.xml):

<exclusiveGateway id="exclusiveGatewayMove"</exclusiveGateway>
<sequenceFlow id="flow2" name="MoveToDashboard" sourceRef="exclusiveGatewayMove" targetRef="Move1">
</sequenceFlow>

I want to when I click button "GoToDashBoard", display dashboard same as below:

Please provide me methods and functions to handle.

Thank you advance!