Sum of value inside a repeat and outside

Hi,

after long time I have to do sum values from a repeat but I don’t remember how to set up the variables.

The Server Connect is contains a query “Sellers” that list all the sellers. I set up a repeat where for each seller list the transactions and a variable that “count” the transaction.

I would make full sum of all transaction…

(I know that to get the total number of transactions, it would be enough to do a simple query. but at this point I would like to do it with variables to understand how it works to pass values from inside the repeat to outside the repeat.)

Here the server connect:

the value count_transaction give the right value per each repeat… but how I can take this value out of repeat?

Thank you