How to properly pass params in go sdk ?

[jacksnipe24]

Discord user ID

No response

Describe your question in detail.

I have a view function that requires one input parameter params of the vector<vector<u8>>

#[view]
    public fun get_result(
        params: vector<vector<u8>>
    ):

Essentially params is an array of hex values.
I have the following go code, trying to get the returned value of the function

address := &aptos.AccountAddress{}
err = address.ParseStringRelaxed("MY_CONTRACT_ADDRESS")

param := "d6bf000332000"

decodedBytes, err := hex.DecodeString(param)

viewResponse, err := client.View(&aptos.ViewPayload{
 Module:   aptos.ModuleId{Address: *address, Name: "MODULE_NAME"},
 Function: "get_result",
 ArgTypes: []aptos.TypeTag{},
 Args:     [][]byte{decodedBytes},
})

I convert the hex string into bytes and provide it as Args, however getting Failed to execute function: VMError { major_status: ABORTED, errors. Is there a special way of serializing the value ?

I also tried with direct RPC calls, and it works

curl --request POST \
  --url https://api.testnet.aptoslabs.com/v1/view\
  --header 'Content-Type: application/json' \
  --data '{
  "function": "MY_CONTRACT_ADDRESS::MODULE_NAME::get_result",
  "type_arguments": [
  ],
  "arguments": [["0xd6bf000332000"]]
}' 

What error, if any, are you getting?

Failed to execute function: VMError { major_status: ABORTED

What have you tried or looked at? Or how can we reproduce the error?

No response

Which operating system are you using?

macOS

Which SDK or tool are you using? (if any)

N/A

Describe your environment or tooling in detail

aptos-go-sdk v1.5.0

[jacksnipe24]

Resolved. For vector<vector> I needed the length of full items and length of each individual vector in the bytes.
For example d6bf000332000 gets encoded to [214 191 0 3 50 0] but the function required [1 6 214 191 0 3 50 0]. The first byte being the length of items and second actual length of paras