Hi guys ,

i am trying to get a IF statement to work with the following.

i have a drop down list box with two different sections in them

BED0005
BED0009


basically they way i want it to work is
if the user selected the BED0005 it would deduct 21mm and if the user selected BED0009
it would deduct 27mm

so the problem is what kind of IF statement would i need to make this work .