CLI accept invalid values for -Xms and -Xmx while adding

The customer has opened one case where they are saying, CLI is not throwing an error while adding invalid values of -Xmx and -Xms.

I tried to replicate the same in EAP 7.2.8 and I observe the same behavior.

~~~

[domain@localhost:9990 /] /server-group=main-server-group/jvm=default:write-attribute(name=heap-size,value=toto)

{ "outcome" => "success",
"result" => undefined,
"server-groups" => {"main-server-group" => {"host" => {"master" => { "server-one" => {"response" => { "outcome" => "success", "response-headers" =>
{ "operation-requires-restart" => true, "process-state" => "restart-required" } }}, "server-two" => {"response" => { "outcome" => "success", "response-headers" => { "operation-requires-restart" => true, "process-state" => "restart-required" }
}} }}}} }

However, the server failed to start but it should not accept invalid values likes garbage STRING while addition.

The domain controller is what would validate the value but what it, or even the Host Controllers, would be running is not necessarily what the servers would be running.