JDev 9.0.3.5 : How to get the value of an item on a page in the controller

Hi,
In the processFormRequest part of my page controller, when the user clicks on Apply, I need to pass the value(s) entered by the user, to a PL/SQL stored procedure. The user enters a value for a field called "FirstName" on the page. I then need to pass this value to a stored proc. But the following code gives me a java.lang.ClassCastException on the 2nd line here. What am I doing wrong?
String firstNameStr = "";
OATextInputBean firstNameBean1 = (OATextInputBean)webBean.findIndexedChildRecursive("FirstName"); // This line throws exception!!
OAWebBean firstNameBean = (OAWebBean)pageContext.getWebBeanValue(firstNameBean1,firstNameStr);
Any help is greatly appreciated.
Kind regards
Tessa Lillie

rather use
String firstNameStr = pageContext.getParameter("FirstName");

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JDev 9.0.3.5 : How to get the value of an item on a page in the controller

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