Credit management on due days basis

Hi Sir,

Our client having requirement to carry our credit management on due days basis i.e.

I am using automatic credit management ,

for e.g.

I set a credit limit  for. e.g. 100000 Rs. to customer with High risk Category ,

In automatic credit management i  use  credit group 02 ( for delivery)  , i.e credit control area , credit group and Risk category ,

, On automatic credit management , i tick to the Oldest open items and give reaction as D , tick to status Block with entering the days ,

Now i want the scenario like, if credit limit exceeds still systems allows to create delivery but if the days i set for the oldest items is gets exceed , system should  stops/ block the delivery for the next days ,

As per my settings below i am not getting the desired result

Here below is screen shot of automatic credit mgmt.

I hope you all understand my requirement ,

so Please do the needful to get the desired result ,

Regards,

Sourabh