Openhab2: reading/writing values to/from heating device

[hr3 (Harry)]

Slider and Temperature Control

Hi there, just a, perhabs silly, question about how to control a heating thermostat. I could set the item (Homematic in my case) to number and set it in the sitemap as setpoint - then in the web ui my heating is shown with two buttons (one for up and one for down). When I set the item as a dimmer and then use a slider in sitemap the sider is shown correct but the actual “level” (degrees in my case) is not shown. How Could I combine the text and the slider? In the screenshot I´ve attached yo…

The exanmple is not for KNX, but you can use that.