How to Trade your BNT on MyEtherWallet (v1.3)
Asaf Shachaf

Hi , I want to sell BNT , this is my operation.
Step 2:
Enter the BancorChanger contract address and ABI
Step 3:
_fromToken : (BNT token contract address) 0x1F573D6Fb3F13d689FF844B4cE37794d79a7FF1C
_toToken : (EtherToken contract address) 0xD76b5c2A23ef78368d8E34288B5b65D616B746aE
_amount : 500000000000000000000 50BNT
_minReturn : 540000000000000000 0.54ETH
Then click “Write” button, and a 
Amount to Send : 0 (i think this is send eth amount, 0 is right?)
Gas Limit : 200000
Then Generate Transaction, and send! 
But the tx execute bad, Warning! Error encountered during contract execution [Bad instruction] 
tx is 0xc9b8b45c4f44e03ea611edf66b854167b7bb88b6acff335f84316f619dc2d528 , can you help me? what is wrong?

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