The attached spreadsheet contains a simple drop down box to select a material type and from that selection a Lookup function is used to obtain the corresponding material property for that type. The problem with it is that it works for all the materials except the last one listed, ie. material 'Titanium, 10% Vanadium' where it incorrectly selects the material for type 'Tin'. I've found that by editing the name slightly that it'll work but can't figure out why it would mistake 'Titanium, 10% Vanadium' for 'Tin' as originally input. I came across this error by chance as the original spreadsheet contains a long list of materials, and yet it always chose 'Tin' when selecting material 'Titanium, 10% Vanadium'. Any ideas as to why it wouldn't work?