Minimum value problem with null value on high level aggregation

Hello everyone,

I have the following code

Conditions_Legend = 
var X = SUMMARIZE(fact,fact[country],fact[WeekText],"MIN", RANDBETWEEN(1,40)+0)
var Min_Country = MINX(X,[MIN])

return
Min_Country

Which applied to a matrix with WeekText as row headers and Country as Column Header produces the following:

For Japan is NULL because for that specific week it does not hold data and my objective is when I take the country dimension from the matrix header, that the minimum retrieved to be 0 due to Japan.

Unfortunately, when I take the country dimension of the Matrix, it does not recognize the null value as 0 and so puts the minimum number value, which is 5

I have played around with if statement to convert null to zero, but I end up having the same result.
Any ideas on how not to ignore the null value in the condition above?

Thanks!
Ps: I used random values and added a 0 to try and force a 0 to appear instead of null