Whomp's Fortress - Switch Star of the Fortress

This mission is unique to the Nintendo DS.
We need Mario for this mission. (Actually, we can use anyone except Yoshi, but we don't have anyone else yet.) I walked along the base of the fortress to the right and around the corner. (This area doesn't exist in the N64 version.) I took a hit from a Goomba and kept going, jumping across the gaps, and dodging Piranha Plants and Bullet Bills. Near the Blue Coin switch, we find an empty glass sphere, like the one we got a Star in from collecting 5 Silver Stars. Near where we landed, on the grass past the pushing walls is the area added on for the DS. There is a brick under one of the sliding platforms. Yoshi can't break this block, so Mario will have to do it. Punching or ground pounding it will reveal a star-shaped switch. Stepping on it makes a Star appear in the Star Sphere. A timer starts ticking down and we have to break the Star Sphere to get the Star before time runs out. If we miss, we can always hit the switch again to make it reappear. I then ran off the fortress.
Take 2- We reach the Star Sphere with plenty of time to spare.
Star Get #21, 2 Coins, 8 Lives
The next Star is Blast to the Stone Pillar.