@ing from Coda to Slack message is random

[Egyesek_Youth_Association]

Hello!

I want to send a Slack message to a channel @mentioning specific people. I have table with the Slack handles + this Formula on a button:
Slack::PostMessage(EgyesekBot, Format("/dm @{1} *[{2} Projekt]* A _{3}_ feladat státusza: {4}. {5}",thisRow.[Slack name],thisRow.[Project Nr.],thisRow.Task,thisRow.Status,Objectlink(thisRow)), "test")

The funny thing is that when it is me it triggers the mention in Slack, but when it is one my colleauge it does not.
Look:
Triggers:

Does not trigger:

I don’t know what is the difference. I checked on my colleague settings, everything is the same as mine, Coda is installed to Slack on the workspace level, Slack is installed on Coda both sides.

Any idea?

[Nick_HE]

Instead of Slack handles I use Slack account IDs. It’s a bit annoying to gather them, but is better supported.

In Slack: Click handle → View full profile → More → Copy member ID

It should work consistently if you @ that member ID instead of @ the text of their handle (and just to be clear, on slack in the message it will appear as their handle)

[Egyesek_Youth_Association]

@Nick_HE PERFECT! Thank you sooooo much!

Do you maybe also have the solution how to send a Slack DM (instead of posting to a channel) using these IDs? The problem is kind of similar if I send out a message (as you see in the printscreen) with /dm the slash command does not trigger in Slack for some reason…