OTRS/otrs — pull request #19 by s7design (2014-02-03 12:39:27+00:00)
Title: [Bug 9011]

New value after value mapping can't be 0.

We changed empty string for default value in $ValueAux (value for mapping) with string '0', this represent situation when value for mapping is zero "0".
This fix has solved bug, and now you can set value for mapping on zero "0", and with this fix bug #9013 also is solved.