yes my first coloumn name is account second coloumn name is id i wanted to when a user clicks on acoount coloumn it should generate random answer from id coloumn
So first of all get length of column id. There is two ways of getting list length dynamically
1.Storing length of id column to any cell in database.
2.or Getting column then using list of length block by which you can store length to any variable
i am gonna tell every portion one by one.
So first of all,
in column 2 and row number 1 you have to store length of list manually mean suppose you have total 70 record and after some day you have added 30 more records then it mean now you have to update value in column 2 and row number 1 to 100(as you have 100 record now)
So now from above post you understood that to store length of list.
now use get cell block to get the cell( where length is stored that is column 2 and row number 1)
now when you got cell store length to any variable(suppose name of that is maxlenghtvalue)
now use random number generator