Power Platform Community Forum Thread Details

Hi everyone,
I’m trying to integrate a SharePoint list (Flights) with an Outlook calendar using Power Automate, and after many attempts I’m completely blocked by a condition that never evaluates as expected.
Below is the full explanation of the scenario and everything that has already been tested.
Flow goal

When a flight is created in a SharePoint list:
- Create an Outlook calendar event
- Store the Outlook Event ID in a SharePoint column
When the flight is modified:
- Update the existing Outlook event using that stored ID
- Avoid creating duplicate calendar events

SharePoint – “Flights” list
Relevant columns:

Fechadesalida (Date)
Fechadellegada (Date)
Origen (Text)
Destino (Text)
Movilidadprueba (Lookup – employee)
ID Evento Outlook (Single line of text)

Important:

The real internal name of the Outlook ID column is:
ID_x0020_Evento_x0020_Outlook
The column:
- Is created in the list
- Is added to the “Item” content type
- Is visible in SharePoint
- Is empty for new items

Power Automate – Flow structure

Trigger
When an item is created or modified (SharePoint – Flights list)
Get item
- Site: correct
- List: Flights
- Id: ID from trigger
Compose – “Check Outlook ID”
Expression:

trim(
coalesce(
    outputs('Get_item')?['body/ID_x0020_Evento_x0020_Outlook'],
    'EMPTY'
)
)
Runtime output is always:
EMPTY
Condition (advanced mode)
Tested expressions, for example:
@equals(outputs('Check_Outlook_ID'), 'EMPTY')
and also:
@empty(
coalesce(
    outputs('Get_item')?['body/ID_x0020_Evento_x0020_Outlook'],
    ''
)
)
Problem
Even though:

The Compose output is “EMPTY”
The SharePoint column is actually empty
The flow runs without errors

The condition always evaluates to False
As a result:

The YES branch never runs
The Create event (V4) action is always skipped (grey)
No Outlook event is created
No Outlook Event ID is written back to SharePoint

What has already been checked / tested

Correct internal column name (ID_x0020_Evento_x0020_Outlook)
Column added to the content type
“Get item” retrieves other fields correctly
Tested coalesce, empty, trim, string, length
Debug Composes (value + length)
Compose runs successfully (green)
Returned value is always “EMPTY”
No runtime errors
Outlook permissions are NOT the issue (the action never executes)

Main question
Why does a condition checking an empty field (empty(...)) or a Compose that clearly returns “EMPTY” always evaluate to False and never enter the YES branch?
Is there any known behavior related to:

Lookups / content types
Get item vs trigger body
Newly added columns
Null vs empty string handling in Power Automate

Any help or alternative approach would be greatly appreciated, because right now the flow executes but never creates the Outlook event.
Thanks in advance