Create Power BI Measure based on the value in the column of the current table for each row and selected values from the slicer

Question

I need to create a Measure in the table based on a calculation with the value in the another column and selected values from slicer.

Table "MyTab:"

DataType	Product	Amount
Type1	Product 1	100
Type1	Product 2	200
Type1	Product 3	300
Type2	Product 1	50
Type2	Product 2	60

First, "MyMeasure" should use the value for the "DataType" column, so for each row I need to use value from that column. I'm trying to use this code, but it doesn`t work properly:

MyMeasure = maxx('MyTab', 'MyTab'[DataType])

Also, I tried this:

MyMeasure = CALCULATE(min( 
     'MyTad'[DataType]), 
    FILTER ('MyTad', 'MyTad'[DataType]="Type1"))

So, I need to get this table:

DataType	Product	Amount	MyMeasure
Type1	Product 1	100	Type1
Type1	Product 2	200	Type1
Type1	Product 3	300	Type1
Type2	Product 1	50	Type2
Type2	Product 2	60	Type2