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