Look it is not enought to repeat your manual. These people are smart and
can read it. This problem happens with IE when there is white space at
the end of the x_amount field. This is why he has the problem for
non-static values, for static dollar amo...
You need to trim the amount field, there is probably a white space (CR
or new line) at the end. Note I observe this problem with IE, but it
does not happen in Firefox