How can i give instruction through XCM(Send message) function to send a message through parity-bridges-common?

Question

Whenever i sending one custom message provided by parity through this command

./target/debug/substrate-relay send-message millau-to-rialto
--source-host localhost
--source-port $MILLAU_PORT
--source-signer //Alice
raw 020419ac

It has been executing the three things 1: Xcmpallet.Sent 2: bridgeRialtoMessages.MessageAccepted 3: xcmPallet.FeesPaid

But how can i send a message through the XCM instruction from explorer only rather than from terminal . Can someone please guide me through this

Answer 1

This the encoded bytes for sending trap instruction:

0x6300010100030419e5c0

Explanation:

dest: XcmVersionedMultiLocation = V3 (version 3) {
    parent :u8 => 1 (going one level up and pointing to relaychain)
    interior: XcmV3Junctions => Here (we want to execute the instruction in relaychain)
}

message: XcmVersionedXcm : V3 (version 3) {
    0: XcmV3Instruction: XcmV3Instruction => Trap (XCM instruction)
    Trap: Compact<u64>: 1234 (user defined value to trap)
}

Result: