Pivot table in Qlik sense - calculate the average shares

[Modiz]

Hi,

I need to calculate the average shares of a product based on the average shares of its sales among customers in a given month. I have a pivot table in qlik sense like this 

	01.06		01.05
	customer_1	customer_2	customer_1	customer_2
product_1	0,6	0,3	0,1	0,8
product_2	0,4	0,7	0,9	0,8

and a need add other measure, like this:

	01.06		01.05		01.06		01.05
	customer_1	customer_2	customer_1	customer_2
product_1	0,6	0,3	0,1	0,8	sum(0.6+0.3)/ count(distinct customer)
product_2	0,4	0,7	0,9	0,8	sum(0.4+0.7)count(distinct customer)

I need to have this indicator for each product in each month, according to the selected customers in the filter, because I want to compare this average with the average of a specific customer. However, when I do this using variables and add the sum of these variables to the table, it doesn't display anything.

and my variables looks like:
var1=Sum({<customer={'customer_1'}>} amount)/AGGR({1} nodistinct SUM(if(customer='customer_1', amount,0)), customer, date_month)

var2=Sum({<customer={'customer_2'}>} amount)/AGGR({1} nodistinct SUM(if(customer='customer_2', amount,0)), customer, date_month)