Please use the codes fences
You define a label for your item in the item defininition
And then you define a label again in the sitemap…
I recommend that you put everything in the item definition
That keeps the sitemaps simple.
A typical item goes like this:
itemtype itemname "labeltext [stateformat]" <iconname> (group1, group2, ...) ["tag1", "tag2", ...] {bindingconfig}
Item:
Number Temperature "Temperature [%.2f °C]" <temperature> { weather="locationId=home, type=temperature, property=current" }
Sitemap:
Text item=Temperature