Hi All,
 
I am a beginner in Anaplan, just finished my training course and started building my first model. What I am trying to achieve here is to sum a column (input) based on each record's category (another input, formatted as list created previously). 
 
For instance, This is my input:
Value   Category
100         A
200         B
500         A
50           C
65           B
 
Note that I have created a list called category, and there are three items in that list (A B C).
I put the category in the page dimension so I can toggle. I did not have a line item called category.
 
What I would like to achieve is to add a total value column to show the total column of that category when I toggle that category.
Category: A
 
Value  Total-value
100         600
500         600
 
How can I achieve this? I tried Value[sum:Category] but it says it is not a line item. Should i create a property in the category list so i can use it in the formula?
 
Thank you so much!