Simulink / Mask Editor / Display Variable bzw. Values

Hello everybody,

I have a question about the Simulink Mask Editor. I would like to have a variable, that is in contact with the subsystem displayed in the Mask Editor. For example Below the "Umgebungstemperatur", the variable which was calculated in the subsystem should be displayed. In this case 30 ohm for Example.

Is that possible ? Which code do I have to enter in the mask editor for this?

Thank you.