I have gone through previous posts but could not get the correct/similar code
for:-
1.when  command button(1) is clicked, 10 rows down (if hidden) from  an
active  cell should be unhidden i.e. if B4 is active cell, rows 5 to 14
should be unhidden
2.when command button(2) is clicked, 10 rows down (if not hidden) from a  
active cell should be hidden i.e. if B40 is the active cell, rows 41 to 50
should be hidden.
Would appreciate assistance