Hi @AbdurRahmanSnow 

In the filter conditions change the condition to application changes to Blackline and test it once by putting log into it.

Make sure that your BR will be triggered only when Incident's Application changes to Blackline.

Kindly mark my answer as helpful and accept solution if it helped you in anyway. This will help me be recognized for the efforts and also move this question to solved bucket. 

Regards,

Prathamesh