Using greater than logical expression in rendered attribute

Question

I have an outputText field for which I write a condition in the rendered attribute. The condition is for comparing the length of the string with so

Answer 1

rendered only accepts EL expression.

subsAlertsHelper.personEmail.length() is incorrect.

On the personEmail object, add a method getLength() witch returns the length

public int getLength(){ return this. length();}

Modify :

rendered="#{subsAlertsHelper.personEmail.length >20}"