[TRINIDAD] PPR don't work in panelFromLayout (Tomcat)

[Martin Piekorz]

Hi all,
I want to get a validFrom and validTo date. I want to limit the validTo date 
with help of PPR and the validateDateTimeRange tag like shown below.
This works fine when it is not inside a panelFormLayout!
If I put it inside a panelFromLayout  it don't work. I get also this warning:
No PPR-capable 'id' found for elements of 
CoreInputText[UIXEditableFacesBeanImpl, id=validFromLabel]. This component has 
not written-out an 'id' attribute.

<tr:form>
...
<tr:panelFormLayout rows="8">
<tr:inputDate id="validFromInput" label="validFrom" autoSubmit="true" 
value="#{person.validFrom}" required="true">
                                               <tr:convertDateTime 
pattern="yyyy-MM-dd HH:mm:ss.S"/>
            </tr:inputDate>
            <tr:inputDate id="validToInput" partialTriggers="validFromInput" 
label="ValidTo" value="#{person.validTo}">
                                               <tr:validateDateTimeRange 
minimum="#{person.validFrom}"/>
</tr:inputDate>
...
</tr:from>

What is the problem here? Could I layout this by an other way?

Thank you a lot of.
Kind regards
Martin