Binding a button's disabled

Question

In the code attached, I have a button component associated with each row of the table. Some rows of the table are allowed to be deleted ,others not, depending upon the field "attributeIsRequired" in the row. I thought the line:
disabled="#{CustomerContact.customerattributesDataProvider.value['customerattributes.attributeIsRequired']}
(admittedly with the wrong sense) would do it, but it sees that the disabled button on each row is being frobbed by the same field -- they are all always either enabled or disabled, not according to the corresponding row in the table.
I obviously don't understand how rows in the table are processed when the table is rendered, and would be grateful for any guidance.
Many thanks.
Regards,
Mike
<?xml version="1.0" encoding="UTF-8"?>
<jsp:root version="1.2" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:webuijsf="http://www.sun.com/webui/webuijsf">
<jsp:directive.page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"/>
<f:view>
<webuijsf:page binding="#{CustomerContact.page1}" id="page1">
<webuijsf:html binding="#{CustomerContact.html1}" id="html1">
<webuijsf:head binding="#{CustomerContact.head1}" id="head1">
<webuijsf:link binding="#{CustomerContact.link1}" id="link1" url="/resources/stylesheet.css"/>
</webuijsf:head>
<webuijsf:body binding="#{CustomerContact.body1}" id="body1" style="-rave-layout: grid">
<webuijsf:form binding="#{CustomerContact.form1}" id="form1" virtualFormsConfig="save | |">
<webuijsf:label binding="#{CustomerContact.customerLabel}" for="customerDD" id="customerLabel"
style="left: 48px; top: 168px; position: absolute" styleClass="vssfonts" text="Customer"/>
<webuijsf:table augmentTitle="false" binding="#{CustomerContact.contactTable}" id="contactTable"
style="left: 240px; top: 168px; position: absolute; width: 150px" styleClass="vssfonts" title="Contact" width="240">
<webuijsf:tableRowGroup binding="#{CustomerContact.tableRowGroup1}" id="tableRowGroup1" rows="10"
sourceData="#{CustomerContact.customerattributesDataProvider}" sourceVar="currentRow">
<webuijsf:tableColumn binding="#{CustomerContact.tableColumn1}" id="tableColumn1" sort="customerattributes.attributeName">
<webuijsf:textField binding="#{CustomerContact.textField1}" id="textField1" text="#{currentRow.value['customerattributes.attributeName']}"/>
</webuijsf:tableColumn>
<webuijsf:tableColumn binding="#{CustomerContact.tableColumn2}" id="tableColumn2" sort="customerattributes.attributeValue">
<webuijsf:textField binding="#{CustomerContact.textField2}" id="textField2" text="#{currentRow.value['customerattributes.attributeValue']}"/>
</webuijsf:tableColumn>
<webuijsf:tableColumn binding="#{CustomerContact.tableColumn3}" id="tableColumn3">
<webuijsf:button actionExpression="#{CustomerContact.button1_action}" binding="#{CustomerContact.button1}"
disabled="#{CustomerContact.customerattributesDataProvider.value['customerattributes.attributeIsRequired']}"
id="button1" text="Delete"/>
</webuijsf:tableColumn>
</webuijsf:tableRowGroup>
</webuijsf:table>
<webuijsf:button actionExpression="#{CustomerContact.addAttributeButton_action}" binding="#{CustomerContact.addAttributeButton}"
id="addAttributeButton" style="left: 23px; top: 216px; position: absolute; width: 90px" text="Add"/>
<webuijsf:button actionExpression="#{CustomerContact.saveChangesButton_action}" binding="#{CustomerContact.saveChangesButton}"
id="saveChangesButton" style="left: 23px; top: 240px; position: absolute; width: 90px" text="Save Changes"/>
<webuijsf:dropDown binding="#{CustomerContact.customerDD}" converter="#{CustomerContact.integerConverter2}" id="customerDD"
items="#{CustomerContact.customerDataProvider.options['customer.customerID,customer.customerName']}" style="left: 120px; top: 168px; position: absolute"/>
<webuijsf:messageGroup binding="#{CustomerContact.messageGroup1}" id="messageGroup1" style="position: absolute; left: 24px; top: 288px"/>
<div class="pagehead vssfonts" style="">
<jsp:directive.include file="Header.jspf"/>
</div>
<webuijsf:staticText binding="#{CustomerContact.staticText1}" id="staticText1" style="" styleClass="pagesubhead vssfonts" text="Customer Contact Details"/>
</webuijsf:form>
</webuijsf:body>
</webuijsf:html>
</webuijsf:page>
</f:view>
</jsp:root>

Answer 1

Yeah, thanks. I'll try to get better at this, I'm a little slow on learning how to use the forum. Too many late nites and too little coffee.
Thanks for looking at the post, I appreciate it a lot.
Regards,
Mike