The name of the list box. If the list box is to allow selection of only one entry, this should be the name of the code field, in quotes (for example, 'DEPTMENT'), that is to contain the value of the selected entry to be returned to the WAM. If it's to be multi-select, its name can remain as the default.
concat('o', position(), '_LANSA_n') – this is the internal name given to the weblet by LANSA.
A name, in single quotes. This can be a nominal choice or the name of a field, the value of which is set by the weblet.