Partial trigger set showrequired attribute to true, but on page not seeing the required 'star'?

Question

Hi All,
I have a selectonechoice dropdown list and a input field, i want when the second item of dropdown list selected then the showrequired attribute of the input field was set to false, if the first item selected then the showrequired set to true. I also want to see the 'star' sign which indicates the showrequired attribute visually can be seen show and disappeared.
I am using a autosubmit enalbed selecteonechoice and a partialtrigger (set the dropdown's id), but on page I didn't see any visual change : the 'star' sign is now showing or disappearing at all. Should it work? Or it's working but on page just not calling related CSS to show/hide the star sign? BTW I am using an el express for the showrequired attribute:  showRequired="#{bindings.ReferenceValue1.inputValue eq 0? true: false}"
I also tried set the showrequired attribute in java method that listen to the dropdown list's onchange event, but still visually I am not seeing any change.
I did:
      comConEditBankName.setRequired(false);
      comConEditBankName.setShowRequired(false);
Could anyone point out my mistake here or give some guide?
Below are the jsf codes:
                                                <af:selectOneChoice value="#{bindings.ReferenceValue1.inputValue}"
                                                                    label="Invoice Template"
                                                                    required="#{bindings.ReferenceValue1.hints.mandatory}"
                                                                    shortDesc="#{bindings.ReferenceValue1.hints.tooltip}"
                                                                    id="soc2"
                                                                    binding="#{home.invoiceTemplate}"
                                                                    visible="false"
                                                                    autoSubmit="true"
                                                                    valueChangeListener="#{home.invoiceTemplateOnChange}">
                                                    <f:selectItems value="#{bindings.ReferenceValue1.items}"
                                                                   id="si2"/>
                                                </af:selectOneChoice>
<af:inputText label="Bank Name" id="it12"  showRequired="#{bindings.ReferenceValue1.inputValue eq 0? true: false}"
                                              required="#{bindings.ReferenceValue1.inputValue eq '0'? true: false}"
                                              binding="#{home.comConEditBankName}"
                                              autoSubmit="true"
                                              maximumLength="50"
                                              partialTriggers="soc2"
                                              value="#{bindings.ReferenceValue1.inputValue}"/>
Thanks!!!

Answer 1

Did you check the expression bindings.ReferenceValue1.inputValue eq 0 is true or not.
One more thing try showRequired="#{bindings.ReferenceValue1.inputValue eq 0}"