With the normal sony smartband application this is not possible.
Even the tasker plugin can not really do short vibrations (i.e. 100ms ) - it can only do long ones with a break inbetween. So playing with tasker and the plugin will only give you some possibility for that, but not as you asked.
Btw. the announcement for the api has been for some time now, and there are no news from sony until now
- their support forum is very silent also. Hopefully there will be updates soon