Quantity related price calculation

[plomp47]

Hello,

I bought the "Quantity related price calculation" plugin and i am having some problems.
Can somebody please tell me how i configure the following prices:

  1-29 pcs. productprice (incl. tax) = €3,50
30-69 pcs. productprice (incl. tax) = €3,20
70-99 pcs. productprice (incl. tax) = €3,05
100 > pcs. productprice (incl. tax) = €2,85

I do not want to work with %, only fixed prices. But how?

[plomp47]

Found the solution myself! 

I used the wrong calculation 

[Token]

I have the same problem. Could you let me know how you fixed this?
Can't find a solution anywere!