EE Subsystem doesn't check some value of params when creating Concurrency utilities resources

[standalone@localhost:9990 /] /subsystem=ee/managed-executor-service=other:add(jndi-name=java\:jboss\/ee\/executor\/other, core-threads=2, keepalive-time=-20)
{
    "outcome" => "failed",
    "failure-description" => {"WFLYCTL0080: Failed services" => {"jboss.concurrent.ee.executor.other" => "org.jboss.msc.service.StartException in service jboss.concurrent.ee.executor.other: Failed to start service
    Caused by: java.lang.IllegalArgumentException"}},
    "rolled-back" => true,
    "response-headers" => {"process-state" => "reload-required"}
}

[standalone@localhost:9990 /] /subsystem=ee/managed-executor-service=other:add(jndi-name=java\:jboss\/ee\/executor\/other, core-threads=2, hung-task-threshold=-10

Resources will be created.