Uncheck selectBooleanCheckbox just after user checked it if condition true - checkbox

Question

excuse my poor English ;)
I have tabView with 2 tab that have alternative rendered by a selectBooleanCheckbox so I did:
<p:selectBooleanCheckbox id="check"
value="#{prestationComponent.prestation.condUnique}">
<p:ajax event="change" update="tabV"/>
</p:selectBooleanCheckbox>
<p:tabView id="tabV" orientation="top">
<p:tab title="#{refMessage_fr.taxe_condunique_title}"
rendered="#{prestationComponent.prestation.condUnique}">
</p:tab>
<p:tab title="#{refMessage_fr.taxe_formullelist_title}"
rendered="#{!prestationComponent.prestation.condUnique}">
</p:tab>
this work perfectly
In one of the tow tab, i have a list, so i want to let this tab active if the list has more than 1 element so i changed my selectBooleanCheckbox to this:
<p:selectBooleanCheckbox id="check"
value="#{prestationComponent.prestation.condUnique}"
onchange="if(#{prestationComponent.addPrestationFormulesList.size()>1}) {PF('messageDialogue').show();#{prestationComponent.prestation.setCondUnique(false)};}">
<p:ajax event="change" update="tabV,check"/>
</p:selectBooleanCheckbox>
and this work with the tab with the list, it's sty active but the selectBooleanCheckbox stay checked
so I want to selectBooleanCheckbox stay unchecked when i checked it if(#{prestationComponent.addPrestationFormulesList.size()>1})
thank you.
==========================================EDIT====================================
I found the solution, i create a function in the managed bean that test the condition and set the value of check box to false if condition is true and i call it in the listener of the ajax event of the check box
<p:selectBooleanCheckbox id="check"
value="#{prestationComponent.prestation.condUnique}"
onchange="if(#{prestationComponent.addPrestationFormulesList.size()>1}) PF('messageDialogue').show();">
<p:ajax listener="#{prestationComponent.checkBoxListner()}" event="change" update="tabV,check"/>
</p:selectBooleanCheckbox>

Answer 1

I found the solution, i create a function in the managed bean that test the condition and set the value of check box to false if condition is true and i call it in the listener of the ajax event of the check box
<p:selectBooleanCheckbox id="check"
value="#{prestationComponent.prestation.condUnique}"
onchange="if(#{prestationComponent.addPrestationFormulesList.size()>1}) PF('messageDialogue').show();">
<p:ajax listener="#{prestationComponent.checkBoxListner()}" event="change" update="tabV,check"/>
</p:selectBooleanCheckbox>