Fileupload blocked by ASM-policy

Yes, that's a possible way. But this would deactivate this signature for the entire policy. The URL is the endpoint of an application and i couldn't manage to get "/file" to work as a Parameter. The ASM don't recognise any Parameter i have tried, although the Option "Handle Path Parameters" is set to "as Parameters". Even a Wildcard-Paramter for "/secure/customerarea/upload/*" with the Parametersetting "ignore value" didn't solve my Problem.

Deactivating the Attack Signature for "path traversal" won't be a good idea, i think.