I noticed that optionsData parameter of select element is missing from workflow-forms-2.1.dtd!So, you should add:

Code: Select all
optionsData is needed when you want to create options dynamically inside a select element of your workflow form <!ELEMENT select (option+, validator*)>
<!ATTLIST select
label CDATA #REQUIRED
name CDATA #REQUIRED
type (simple | multiple) "simple"
data CDATA #IMPLIED
optionsData CDATA #IMPLIED <!-- Add This Line -->
width CDATA #IMPLIED
height CDATA #IMPLIED
readonly (true | false) "false"
>
