Flow Variables Not Displaying In The Dynamic Content Menu

I was trying to dynamically set a SharePoint list item ID to a variable but the variable was not displaying in the Dynamic Content menu.

The solution was to use an expression to set the value, save the flow, exit the edit screen, then re-enter the edit screen.

variables('varRefID')
Create a variable
Notice the variable is not available for selection
Use the expression window to enter the variable name
The variable has been added but looks weird. This is not an issue but continue reading if you want to clean display value.
Save your flow and exit the edit screen.
Edit your flow
The variable is now displayed correctly!

Power Automate Bad Gateway Error

I was trying to use a SQL Insert Row action to insert a new row in a SQL Server table and received a Bad Gateway error. First, I thought it was a permissions issue, then I thought my Flow stopped working…

Turned out to be an issue with the amount of data being inserted into a field. One SQL column was set to varchar(X) and the Flow was trying to insert more characters than X.