creates an Item.
That Item has several properties; it is of type String, it has a label “TEST WORKS”, it has a name MyTest, it has a default icon, it has a state NULL at creation.
Have you looked in your openhab.log ?
Also in your events.log - if you never see your your Item being updated from NULL to some new state in there … it will always remain at state NULL.
Are you looking for something like this ?
rule "my first rule"
when
System started
then
MyTest.postUpdate("Banana")
end
Okay.
As said, if you never see your Item updating in your events.log, then it has not updated, If it has not updated, then you can look at HABpanel as much as you like but will always see NULL.
What do actually want to investigate here, this Img_HTML Item?
What messages do you see from the HTTP binding in your openhab.log?
None? Have you installed the HTTP binding?
Don’t know what that means, “triggered”? If you use a control in HABpanel, it should send a command to your Item. That will be visible in your events.log. You have not shown us any HABpanel controls yet, so I don’t know what you’re expecting to happen.