1-wire solar sensor reading awry

I have the max voltage for my solar sensor set at 200 (mV?) in the 1-wire and labjack setup. I have use this value ticked. Current mV raw data reading is 154 mV and the % reading says 100% :?

From my math this should only be around the 90% mark? I originally used 125 mV as 100% but found that was too low. Is it possible that the new value I have netered has not been picked up. Using 10.16s, and the program has been restarted since changing the value.

Any ideas on this problem yet?