let suppose I want to create a cast table, in one field with multi value write down actors and in another write down their roles, as example
A has "role A" B has "role B" C (no role) D gas "role D"
I fill up field actor with 4 value (it is multi value text field),
1)A 2)B 3)C 4)D
then in field roles I write down 3 value, the actor "C" has no role
1)"role A" 2)"role B" 3) 4)"role D"
then when I save , I want to show each actor and field in pair, first value of field actor with first value of field role, but if a actor has not role every thing mixed up
A has "role A" B has "role B" C has "role D" D
Is there any way to drupal consider a empty field as filled up field and do not ignore it in save specially between filled up field?