Calling liquidationCall - Aave error

Hello, I'm having issues with calling liquidationCall, would appreciate it if anyone can tell me what I'm doing wrong.

I'm running a fork of Polygon Mumbai on hardhat:

• impersonate whale accounts to transfer tokens to my account
• gave approval to the Pool contact, supplied WETH and borrowed DAI
• impersonate Pool Admin and set the price oracle for my collateral (WETH) to 1
• health factor is now < 1, so I call liquidationCall
• transaction goes through successfully, but barely any debt was paid. Eg. If i borrowed 200 DAI, I still have an outstanding loan of 199.xx DAI after the liquidationCall

Am I missing anything here? In the debtToCover argument, I played around with using the amount I borrowed and the max uint value (type(uint256).max in Solidity) but I'm still only liquidating a fraction of a percent of the borrowed amount