Hello,
Thanks for reply.
Yea I’m using tag in which I’m holding complete instance of object class which is related to record in db.
When I get selected row, I just extract tag as object class instance and fire e.g. DeleteRecord() method of it 
If that is done well then I’m removing row from table and do other GUI stuff.
Since I already have section id and row id I don’t have to go over all sections and rows to check tag for value and match to it (I think).
I’m planning after I complete and wire up all what I need to switch from assigning instance of class to tag with a just placing Db RecordID in tag property since I think it will reduce memory usage since ID would be a string or integer which takes less memory then class object 
For know it’s just testing and to see how everything will come together and see what I can do with Xojo (from limits point of view).
I’m (just) a new to Xojo dev.