function readOnly(count){ }
Starting November 20, the site will be set to read-only. On December 4, 2023,
forum discussions will move to the Trailblazer Community.
+ Start a Discussion
Abhishek Kasera 17Abhishek Kasera 17 

i am facing this error in Flows The formula expression is invalid: Syntax error. Extra Account

Facing the Error while creating the Flow
AnkaiahAnkaiah (Salesforce Developers) 
Hi Abhishek,

you need to use messagebody component for this.

Refer the below link have solution for similar kind of ask.
https://automationchampion.com/2022/04/04/auto-post-a-message-to-chatter-when-an-event-is-created-2/

If this helps, Please mark it as best answer.

Thanks!!