Problem with Hierarchy

[#1]

Hello everyone i have a problem and i want to now if someone can help me.

i have a table with this fields: SonID and ParentID these are production parts and i want to know how many sons a parent can have so i used Hierarchy and at first seems to work fine but only worked for some ParentID numbers but not for all of them, heres an example of the data i get from an SQL table

so, what im trying to do is if a SonID shows also as ParetID get that ParentID's SonID and put it as a new level like this

as you can see i found the SonID(9) in the ParentID column and create a new leve with that Parent's SonID, and also a SonID can at a time convert into a Parent and give place to multiple levels like this:

you can have any number of sons and any number of levels.

i apreciate your help in advance and hope that theres a way to do this, also i have the general idea of how to do this with For sentence but i find it hard to realize how to use it in QlikView if anyone knows how can i do this with For sentence ill apreciate as well

thanks