Field help (AYADSCIND0) 

Mapping of N Xtend fields -> N values of an X3 parameter :

Enter 'No'in the column 'Multi'.
In the value grid of the 'Interface parameters' (X3 parameter), the column 'Index' gives the index of the cell that will be valued with the XTEND field value.

SEEREFERTTO For further information, see the paragraph on the multiple mapping.