How to use conditional action with Base64 encoded Event Hub Trigger output?

[askpatrickw]

I am exporting Azure IoT Central Telemetry data to Event Hubs and then consuming that in Power Automate Flow.

In my stream of telemetry I have different data coming through. I want to send some data as a Teams post and ignore the rest.

If I send all the output of the Event Hub Trigger to Teams the posts are properly formatted.

BUT, I want to add a conditional action to evaluate Event Hub output.

This output is base64 encoded and Flows don't have base64ToString() as an available expression.

I've also tried creating a variable, using compose to see if they will cause the decode to happen but it didn't work.

Is there some other way to work with a Base64 Output from a trigger?

[askpatrickw · Accepted solution]

This just does not work in Power Automate.

It works fine in Logic Apps.

I just rebuilt everything in Logic Apps and it works great.