Hi Marsha and Lee and thank you for giving me tips
Here are some explanation, hopefully I'll give you a proper answer.
Our system has predefined products in database - every product has its ID, name and price.
I enter ID or name by myself and the price will be shown on the screen receipt. If I add another one, it would be added to screen receipt ofc, and the price of that product would be added to price of 1st product. etc...
I would need to check if that price,on the end, is calculated right.
I was hoping that I could enter some equation in some property checkpoint(or something similar) of that calculated value and to not use excel tables (with manualy calculated result) etc, (explained in data loops), but if thats only way I'll use it.
I'm pretty new in this abd still learning...
I would be very thankful if you give me keyword test syntax if you have enough information :)