Refresh icon in the habPanel

I am new to openHABpanel,
we are sending data from hardware to software ,data is reflecting in the software side ,but some how i clicked on the refresh icon the data’ s are clearing in the habpanel instead of showing same data passed by the hardware

I think we need more details. I guess correctly, you need to use Persistence with restoreOnStartup.

http://docs.openhab.org/configuration/persistence.html