Why does CLI show JBAS012470 error while defining keepalive-time attribute ?

Issue

• While configuring an executor on JBoss via CLI it fails at keepalive-time:

/subsystem=threads/bounded-queue-thread-pool=http-executor:add(keepalive-time=10, max-threads=100,name=http-executor,queue-length=0)
        {
            "outcome" => "failed",
            "failure-description" => {"domain-failure-description" => "JBAS012470: Attribute keepalive-time expects values of type OBJECT but got 10 of type INT"},
            "rolled-back" => true
        }

• Similar exception occurs while specify a keepalive-time attribute for workmanager :

/subsystem=jca/workmanager=default/long-running-threads=default:write-attribute(name=keepalive-time,value=10)
{
    "outcome" => "failed",
    "failure-description" => {"domain-failure-description" => "JBAS012470: Attribute keepalive-time expects values of type OBJECT but got 10 of type INT"},
    "rolled-back" => true
}