GroupHeader + UserDataSet problem

Przemas

When I've used groupHeader with MasterData of UserDataSet - the first groupHeader with all data is showing ok, but on the next groupheader there isn't a first row of Masterdata. Another thing that after all data i'm getting extra empty cells

gpi

Attach small demo project with problem

Przemas

Data comming from StringGrid (screen)
GroupHeader brake on ID
As U can see every person has 3 positions in list - 9 position at all data but on report there is only 7.

Przemas

Problem Solved! with missign row - I've didn't set frxUserData OnPrior event to decrement line number
To eliminate extra empty row I've set frxUserData CheckEof event to set custom Eof data simple
if nLineNumber=StringGrid1.RowCount then Eof:=true; where nLineNumber is variable iterate row number