1.280000 is the default value in Original Happy.hap
The 0.03 difference between 1.280000 and 1.250000 have no noticed difference in appearance.
Happy.hap can be adjusted from 0.000000 to 3.000000, In 0.25 increments.
0.000000 is a zero value and gives no smile at all.
0.250000 to 1.000000 gives various frowned smiles getting close to a nice smile.
1.250000 to 1.500000 seems to be the range of a very nice smile, 1.500000 being the best.
1.750000 to 3.000000 the smiles get bigger and around 3.000000 the smile may be to big for appearance.
You will have to click Apply for the new Smile Value to be set, The Smile Value will be retained each start up until a new Value is set and Applied.

I will advance this Plug-in more when I research a slider bar command for HAL 6 Plug-in.
I will advance this Plug-in with a 10 Band Equalizer function so that the Smile controller will have more flexability and value power.

This Plug-in is to control the Smile in Happy.hap only.
Other Emotional Controllers have been written but are under control for Packaging a plug-in at this time.
This Plug-in is written by: Gerald L. Blakley A.K.A OnTheCuttingEdge2005