Is it possible to rename a column that contains special signs and numbers in microsoft azure in KQL?

I started working with Microsoft’s sentinel one.

I’m working on gathering information from the logs that sentinel is producing.
For better readability, I want to change the names of the columns that I’m projecting, but couldn’t rename a column that contained numbers and special characters.
I’m using KQL to gather the logs from sentinel

AuditLogs
| where OperationName == "Add group" or OperationName == "Delete group"
| where TimeGenerated > ago(20d)
| project TargetResources[0].displayName, OperationName, ActivityDateTime
| project-rename GroupName = TargetResources[0].displayName, Time = ActivityDateTime, Type = OperationName

So renaming the columns: ActivityDateTime & OperationName is working, but I get an error that says "column name expected" when trying to rename the first column. Even though it appear when running that code.

Is there a way to rename that column?

>Solution :

TargetResources[0].displayName is an expression, not a column name, so there’s nothing to rename here.

If you want to give this expression a name, you can use the extend operator.

| extend GroupName = TargetResources[0].displayName

print TargetResources = dynamic([{"displayName": "Tic"}, {"displayName": "Tac"}, {"displayName": "Toe"}])
| project-rename GroupName = TargetResources[0].displayName

project-rename: expression ” cannot be used as a column name

Fiddle

print TargetResources = dynamic([{"displayName": "Tic"}, {"displayName": "Tac"}, {"displayName": "Toe"}])
| extend GroupName = TargetResources[0].displayName

Fiddle