Can anyone help with the following?

Hi Adam

I'm trying to design something for THT and I have run into a problem with a
formula and wondered if you could help or ask someone for me. The example is
below.

=(IF(A10="Counselling Room
1",(D10*5)+(E10*50)+(F10*50)+(G10*100),0))......an d so on. T

This works OK if the cell A10 contains a value like "Counselling Room 1"
shown here. However rather than letting the end user enter freeform text in
here I want to put a combo box in the cell so they only have a specific
number of option sto choose from. In the formula instead then of having the
above I have put the following so that it looks at the value chosen in the
Drop Down Box.

=(IF("Drop Down Box 12"="Counselling Room
1",(D10*5)+(E10*50)+(F10*50)+(G10*100),0))......an d so on.

It doesn't complain that the formula above has an error but it doesn't seem
to calculate the formula for me. I have also included a copy of the
spreadsheet. Your help would be very much appreciated.

--
Niall Herron