How to calculate the minimum of a measure?

[webportal]

How to calculate the minimum of a measure?

I have this Field Parameter with meaures:

NetSales = SUM('Table'[SalesValue])

SalesQty = SUM('Table'[Quantity])

Table is like:

Customer ID | Quantity | SalesValue

I want the minimum value of Quantity and Sales value per customer id.

So, using the NetSales in a slicer (single selection), the following expression:

MinNetSales = MINX('Table', SELECTEDMEASURE())

Which is returning BLANK.

[webportal]

@katika555 

Thank you for your help.

But, how about when the user changes the slicer value from Net Sales to Sales Quantity?

[katika555]

What you mena under Slicer Values Change?

MinSalesQty = CALCULATE(MIn('Sales'[Quantity]), ALLEXCEPT(Sales,Sales[Customer ID]))

Same for Qnt 

[katika555]

@webportal 

MinNetSales = CALCULATE(MIN(Sales[SalesValue]),ALLEXCEPT(Sales,Sales[Customer ID]))

See attached file: 
https://drive.google.com/file/d/1C-ssh8zFbl2PkfUvRTiiP0R4jLjlGVEq/view?usp=share_link