I have created a custom customer attribute that shows up on the checkout page. I am trying to make this read only. That is show a value in the text field but not have it be editable. I tried adding the following parameter
'readonly' => true, 'value' => 'xxxx'
to my addattribute script. I did not get an error when i ran the script and the attribute was added. I see the field in my checkout form and xxxx shows up correctly but it is not read only, I can still edit the field. Does anyone know how to make the text field not editable?