How do I send an error message as an ephemeral message in a slash command?

[Superguy2876]

I have the following command.

@lightbulb.option("coins", "The number of coins to flip.", int, default=1)
@lightbulb.command("flip", "Flip some coins.")
@lightbulb.implements(commands.SlashCommand)
async def flip(ctx: lightbulb.context.Context) -> None:
    coins = ctx.options.coins
    if coins <= 0:
        await ctx.respond("Invalid number of coins.")
        return
    
    flipList = []
    heads = 0
    tails = 0
    for _ in range(coins):
        flipList.append(random.choice(["Heads", "Tails"]))
        if flipList[-1] == "Heads":
            heads += 1
        else:    
            tails += 1
    
    response = f"Flipping {coins} coins.\n"
    response += f"Flipped {heads} heads and {tails} tails.\n"
    response += f"{', '.join(flipList)}"

    if len(response) > 2000:
        response = f"Coin flip body too long.\nFlipping {coins} coins.\n Total Heads: {heads}, Total Tails: {tails}."
    
    await ctx.respond(response)

How do I send the "invalid number of coins" message as an ephemeral message?

[Superguy2876]

For those looking here, I found the answer.
Put flags=hikari.MessageFlag.EPHEMERAL in the respond method.

So that part would look like.

    if coins <= 0:
        await ctx.respond("Invalid number of coins.", flags=hikari.MessageFlag.EPHEMERAL)
        return