Want a trigger condition based on words in filename

[Drogon]

I'm trying to build a trigger condition for my flow so the flow will only trigger if the condition is met. I want the condition to be if the filename contains the word 'drivers'.

I tried using this: 

@contains(triggerBody()?['Name'],'drivers')

but got the error message: 

InvalidTemplate. Unable to process template language expressions for trigger 'When_a_file_is_created_or_modified_(properties_only)' at line '1' and column '17042': 'The template language function 'contains' expects its first argument 'collection' to be a dictionary (object), an array or a string. The provided value is of type 'Null'.'.

Thanks for any help you might have!

[Drogon · Accepted solution]

Figured it out - I was missing {} brackets, so a simple syntax error. Once I added them in, the flow worked great!

@contains(triggerBody()?['{Name}'],'drivers')

So whenever my filename contains the text drivers, the flow will trigger.