Create a bar graph with measures as axis

Hi There

I am pretty new to Power BI, but I am quite exciting about this incredible tool. However, I have been having hard times since I am a Excel user and still not getting used to the way DAX works.

I hope you could help with this. I have been struggling to find a suitable solution after two days

Basically, I need to develope a bar graph which shows total spend by certain brackets and filter by category and totalising by supplier.

For example, if the total spend in Supplier 1 in Category 1 is 500 and total spend in Supplier 2 in Category 1 is 400. the graph sould show a total for the bracket of 0-500 of 900 with a count of 2 Supplier.

My problem is, if I add all the spend when choosing the bracket is not adding by supplier but by the line.

In excel it result quite easy to develop by combining a Pivot Table and Simple Calculations, please refer to images below.

However, I do not know how to replicate this in Power BI.

I was able to develop the code in DAX

Spend Brackets = IF(AND(SUM(Example_Data[Amount])>0,SUM(Example_Data[Amount])<100000),"<100000",IF(SUM(Example_Data[Amount])<800000,"<800000",IF(SUM(Example_Data[Amount])<1500000,"<1500000",">1500000")))

which is providing the correct information if I include in a table "Supplier" and "Spend Bracket". However, this do not work to put it ia bar chart

I am trying to insert the file but do not know how

Thanks

Carlos