Swap and Unwrap does not work for me

[davidedaji]

to = router.address # router here, eoa address in unwrap
amount = 1 * 10 ** 4
slippage = 0
FEE = 10000
path = [TOKEN_ADDRESS, WETH_ADDRESS]
from_eoa = True
unwrap_calldata = encode(['address', 'uint256'], [eoa.address, slippage])
v2_calldata = encode(['address', 'uint256', 'uint256', 'address[]', 'bool'], [to, amount, slippage, path, from_eoa])
deadline = 2*10**10

approve_permit = token.functions.approve(PERMIT_ADDRESS, amount)
approve_router = permit.functions.approve(TOKEN_ADDRESS, ROUTER_ADDRESS, amount, deadline)

I don't know why
unwrap_calldata = encode(['address', 'uint256'], [eoa.address, slippage]) this one accept only slippage = 0; but it does not unwrap and I receive weth anyway

do you have any clue?
thanks a lot

[0xMaka]

Hi, please excuse the extreme delay I have been on a quest elsewhere for the best part of this year.
I'm unsure if you ever got this sorted, but I just retested the code using usdc to wmatic, and this is working for me as I received the matic, both with and without slippage.

Things I would check

• The exact balances before and after, as well internal transactions in explorer
  Example uses dust amounts to be safe. Not all explorers will show the internal eth_calls that transfer the native coin, under the main summary. So you would have to check another tab.

• That I was not trying to unwrap weth on a chain where eth isn't the native coin.
  weth in this context stands for the wrapped native on that given chain, but that would be matic/wmatic on polygon etc. Sometimes I have absent mindedly used the wrapped eth address on a given chain.

• That slippage wasn't more than total unwrapped.

• Stepping through the failed transaction on tenderly (if the network is supported), or simulating to recreate the issue, looking specifically at that call towards the end:

Else I would need the token addresses and network to test.