Missing value of required parameter 'name'. - Slack create channel error

Hello, I’ve set up a basic trigger with a comany name in input, and when I want to create a new Slack channel, it gives me this error :

BundleValidationError
Validation failed for 1 parameter(s).

  • Missing value of required parameter ‘name’.

How to fix it ?

I’ve used the lower function but it doesn’t change anything.

The problem seems to be that the value is empty but i dont know why as I’ve enterend a value in my basic trigger.