has already a value assigned()

This function can only be used on fields within a node having value "Loop" in node attribute "Iteration" set and only makes sense for option "normal data mapper".

Returns "true" if the current field already has been assigned a value in a preceding iteration (by the mapping or a function), otherwise "false". Note: If an empty string ("") has been assigned to the field, it is considered to be an assigned value. The Empty Flag has no relevance for this function.

This function has no parameters.