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why is this expression invalid

I am trying to use an expression to test for a blank value in an excel table that i am importing to sharepoint.  I want to avoid my prep step of adding numbers into all my blank cells in the table.  At the end of the day, i will replace the final 1 (else) with something more useful.
I got the expression builder to finally take this expression/formula/function, but when i ran the flow i got the following error:
InvalidTemplate. Unable to process template language expressions in action 'Update_item_4' inputs at line '1' and column '2275': 'The template function 'isBlank' is not defined or not valid.'.
any ideas how i can build this test in an expression for an update item action?
Super User
Super User

Hi @natanz ,

Is this PowerAutomate issue ? 😊 I think is the wrong community, but let me give a shot.

There is no function called IsBlank() in PowerAutomate, you should use empty() function to check if your value is empty.

Also for string in PowerAutomate you have to use single quote ' , not double ".

And last you have as a result a string in one branch of the if clause and an integer in the other one. You can confuse the system with this approach.


Hope it helps ! 


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