Solidity error when encoding arguments to call a function with Bytes32 Type Parameters

Question

While developing a Smart Contract with Solidity on Remix, after creating the contract I'm trying to call a function by passing Bytes32 datatype parameters:

function addTT(bytes32 _name) public {
...
}

but when I call addTT() by passing parameter "neo" it throws the following error:

transact to Abc.addTT errored: Error encoding arguments: Error: invalid bytes32 value (arg=undefined, type="string", value="asda")

Any idea how can I properly call function addTT()?

Answer 1

You need to convert the value in hex to be passed. neo is 0x6e656f in hex. If you try to pass '0x6e656f' it will work (don't forget the quote).

Answer 2

You can also use string instead of bytes32 in Remix which has higher gas cost and hence less efficient.