How to get robotic bay?

Hi friends steemit this time I will explain how to get robotic bay in the game Empires & Allies, how to get its somewhat difficult a little bit, if you want to know how to follow the following steps:

1.click on robotic bay building.

1. after open there are three options select as you wish.
   

1. to get robotic click buy cache, to get its robot you guys must have gold as much as 45 gold.
   

So much from me, thanks.
May be useful.