Formating outputText

[Vladimir Coutinho]

I'm trying to use a function to format the text of the outputText:
 <h:outputText value="#{util.text.FormatText.formatCNPJ_CPF(c.CNPJ_CPF)}"/>
 

But I'm having the following error:

 

javax.servlet.ServletException: Invalid _expression_: '${util.text.FormatText.formatCNPJ_CPF(c.CNPJ_CPF)}'
 

 

Could someone help me?