How Can I Make Group Of Every Row In A List?

Solar2D Widgets
#1

  <lua>

rowGroup[groupIndex] = event.view

row.title = display.newText( t[row.index][17], 0, 0,750,0, native.systemFontBold, 25)

row.title:setTextColor( 51,102,169  )

rowGroup[groupIndex]:insert( row.title )

</lua>

i’m trying to make a row group through event.view. The line “rowGroup[groupIndex]:insert( row.title )” is giving an error that

Attempt to index field ‘?’ (a nil value)

Actually i want to insert title subtitles and images in one row of list so i need to make group of every row. how can i do that? can somebody tell me what i’m doing wrong??

Regards