How to make Reprice Order on Sales Order Header Page conditional on Business Unit

Summary:

We have a business requirement to disable the Reprice Order field for a specific Business Unit. However, the binding variable for the Business Unit is not available in the EL expression, so we’re unable to reference it directly. so how can this be done?
Please note that using an Order Management extension is not suitable in this case, as we specifically need to disable the action, not just control its behavior.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):
#{bindings.BusinessUnit.inputValue == 'MFIC'}
tried to use this code or anything similar but it doesn't work