RPA DataTable: Get Previous Row Column Value, Set to Current Row Column Value

sorry i can not use this solution…

As I want to Read Next row value before i continue to regiser the current row…

my issue is
When i have done reading current row through if statement … then I want to know… the next row Category before continue…
And if there is no category or no row in table which has Category … then it should continue and register the current row in systerm…
But it giving me error when it there is no row in system–