Hello everybody!.
I thought this is a simple question, but really cant find answer for it.
I created a UIA in testnet and have tried to sell it with command like that:

sell nathan CORE TEST 0.01 1000000 true

But.. I always have answer:
10 assert_exception: Assert Exception
rhs.size() <= max_rhs_size:
    {}
    th_a  asset_object.cpp:131 amount_from_string


What reason of it? What data format i need to use?

Please, help me 
I spend so many time for this simple question ((