"Decimal String To Number" is truncating a decimal string as an integer
rather than a DBL: i.e., 4.50 is converted as 4. The "default" input is
wired to a DBL, and the wire color (orange) indicates compatibility
with DBL. The HELP example talks about this indirectly; it shows
conversion as an integer with the "default" input as an integer;
implication is that conversion should be as DBL with "default" wired as
DBL.