I built a relationship on two values:
organizationid = organizationid
globals.value = invoicesid
globals.value is in this case empty... (Is it really "" or is it null)
Now I don't know if this is possible but what I try to archieve is find all orders in this case where the organizationid = organizationid and the invoicesid is still null (or empty).
How can I do this? What I defined above doesn't work...
1. organizationid = organizationid works...
2. invoicesid = nullable...