The form should limit the number of digits allowed in the "I want to spend" field. Right now, it says I'll receive more bitcoins than the total possible mined c

The form should limit the number of digits allowed in the "I want to spend" field. Right now, it says I'll receive more bitcoins than the total possible mined coins cap (21 million). http://i.imgur.com/pCUTqOz.png http://i.imgur.com/pCUTqOz.png Obviously it's a mock form, but shouldn't it at least be accurate?