define exactly number of parameters for a specific URL

Dear All,

 

Environment: BIG-IP 13.1.0.5

 

For a specific URL I defined a flow based parameter check. All these parameter are mandatory. Totally I have 4 and when I go to Security ›› Application Security : URLs : Flows List ›› Flow Properties I see there are 4 mandatory parameters defined.

 

All these checks are working fine but if I add a fifth parameter testing in my browser such a request is not blocked.

 

I didn't find a way to define that this URL has to have exactly 4 parameters and not more.

 

Is there a way ?

 

Kind regards

 

Hans