Help with this start routine

Hi

I am going to write a start routine where I am going to delete all records where the Nav.attributes of certain infoobject has values =1,2,3,4,5,6.This nav.attribute is not there in source or target infoprovider but only present as attribute on this infoobject.

My idea is to read master data of this infoobject into internal table.Then compare the infoobject value present in the record to infoobject value in this internal table and if there is a match,then I will check if the navigational attribute value of that infobject has value 1,2,3,4,5,6.If YES,then we delete the record .

How can I write this in ABAP.I tried but I failed.

Thanks.