Help with a formula

Hi all Can you help me. I cannot get this figured out - probably too tired or more likely too stupid. Trying to automate the points cost of this Hero System stat. CON = 13 END = 30 Cost per point of END above CONx2 is 0.5 Formula for cost is (END - (CON*2)) * 0.5 which should equal 2 [[{@{END}-(@{CON}*2)}*0.5]]  - I have tried a number of combinations and keep getting errors. The character sheet is computing the result as 17. Cheers B

In chat I'm getting "2".  I'm just substituting the direct value for CON and END.  Do you get the expected values for CON and END if you pull their values directly?  ie @{selected|CON}  and @{selected|END}

Looks like you are using the wrong kind of brackets in one place. Try this [[(@{END}-(@{CON}*2))*0.5]]

Thanks guys - got it sorted with your help and another mate who has just written a sheet that was accepted. Cheers.