hello I have a parent report which is having unique ID i.e; $F{ID} & a child report which displays addresses of the corresponding $F{ID} and a grandchild report which is a part of child report, which displays name and cotact details of the corresponding $F{ID}, grandchild report takes parameter from child report, child report takes parameter from parent report, the common paameter is $F{thid} the child report and grandchild report are working fine when run individually but when I run the parent report then only child report displays data and grandchild report shows cloumn header with null vales. hope you understood the whole schema. I think there is some mistake in subreport parameter. suggest me where I am going wrong..?? Thankyou for reading this post NITIN