Line Item (List) link into a module

Hi everyone,

i have a module with several line items. One line item is a List, another one is a number.

After i have selected a value and entered a number, i want to link the value into a module which has the List as in the rows. Any idea how to link the data ? I would like to have the value number entered only appear on the selected list item.

i would like to get the value of 20% into "Auswirkung in %" only on the line item Yummi and not on any other.

Thanks