Do I need hidden buttons for each transition in Spring WebFlow2 on my form?

Do I need hidden buttons for each transition in Spring WebFlow2 on my form?

I am starting to not like Spring WebFlow2 if this is true. Someone is telling me I need a hidden button for each transition I would like my form to have. Example If I have a form with a submit and reset I understand I should use two buttons.

But if I have a form that needs to kick off a transition to load some data on the form do I really need a button for each transition type? I would found this crazy but is it true?

He is my store. I have a form that the user starts to fill out and once the user clicks on a radio button I need to load a number of schools into a dropdown for the user to pick. The only way I found to do this is to use javascript and a hidden button to kick off the loadschool transition type. example:

Code:

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<INPUT  value="Load Schools" type="submit" name="_eventId_loadSchools" style="visibility:hidden">

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Is this the best way?
Is this the only way?
Do I really need a button for each transition?

My Flow:

Code:

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<view-state id="SchoolVisitReport" view="SchoolVisitReport.jsp" model="visit" >
                    <transition on="submit" to="addVisit">
                            <evaluate expression="flowActions.validateVisit(visit, messageContext)"/>
                        </transition>
                   
                    <transition on="loadSchools" to="SchoolVisitReport" >
                            <evaluate expression="flowActions.initializeSelectableSchools(visit)" result="flowScope.selectableSchools"/>
                    </transition>
                   
                  <transition on="cancel" to="endState" bind="false"/>
</view-state>

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My JavaScript:

Code:

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function loadSchools(strBorough)
{
        alert("Loading Schools for borough " + strBorough);
        document.visit._eventId_loadSchools.click();
       
}

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My Radio Buttons:

Code:

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<form:radiobutton tabIndex="9" onchange='loadSchools();'  value="B" path="borough" />Bronx-X<BR>
<form:radiobutton tabIndex="10" onchange='loadSchools();' value="K" path="borough" />Kings-K<BR>
<form:radiobutton tabIndex="11" onchange='loadSchools();' value="M" path="borough" />Man.-M<BR>

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So can someone please tell me if I am doing this the right and best way with webflow2.. thanks

I also tried the following but nothing got submitted:

Code:

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<script type="text/javascript">
  Spring.addDecoration(new Spring.AjaxEventDecoration({
          elementId : "borough",
          formId : "visit",
          event : "onChange",
          params : {
                    _eventId : "loadSchools",
                      fragments : "body"}
                    }));
</script>

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