imagine a range like this:

Actiondate volume
1-sep 2
1-sep 3
3-sep 5
5-sep 7
9-sep 6
etc

this constrains
Actiondate Actiondate
=1-sep <6-sep



I would like a function that counts the number of days between my contrain
that do not doble count de dates....in this example the answer would be 3

Thank you people very much....I am so gratefull for your help