[jboss-as7-dev] Reading attribute with CLI fails

[ChrisRamsdale]

Hi everyone,
I'm trying to read the "development" attribute of the web subsystem
using the command line interface.
Since the attribute is part of a group (jsp-configuration), I cannot
read it using the standard syntax. 

"jsp-configuration" => {
    "development" => false,
     . . . .. . .       
}

[standalone at localhost:9999 subsystem=web]
:read-attribute(name="development")
{
    "outcome" => "failed",
    "failure-description" => "No known attribute development",
    "rolled-back" => true
}

or

[standalone at localhost:9999 subsystem=web]
:read-attribute(name="jsp-configuration/development")
{
    "outcome" => "failed",
    "failure-description" => "No known attribute development",
    "rolled-back" => true
}

Anyone can enlight me how to read this attribute successfully ? 
Thank you very much!
Chris

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