Builds a dynamic selection list from an in-memory collection.
See Also:org.apache.cocoon.woody.formmodel.Field.setSelectionList(Object modelString valuePathString labelPath) Parameters: model - The collection used as a model for the selection list. Parameters: valuePath - An XPath expression referring to the attribute usedto populate the values of the list's items. Parameters: labelPath - An XPath expression referring to the attribute usedto populate the labels of the list's items. Parameters: datatype -