Flow From Visualforce - Real Example.html

<apex:page standardController="Contact">

<!-- When the flow finishes, the user will end up back on this Contact's page. This is determined by the finishLocation -->
    <flow:interview name="Contact_Update"
                    finishLocation="/{!Contact.Id}">

<!-- The first apex:param is setting the v_ContactId variable in my flow to the id of the Contact -->
<!-- You can set as many of these as you want simply by listing them out list this -->
        <apex:param name="v_ContactId" value="{!Contact.Id}"/>
        <apex:param name="v_ContactFirstName" value="{!Contact.FirstName}"/>

    </flow:interview>

</apex:page>