PixelPower - SAY WHAAAAAAAAAT.... checking it out now and thank you. I have been working night and day on this game and this is the first time I couldn't work through the issue. Whether it works for me or not you're a life saver for jumping in so fast to help.
It's much appreciated and I'll let you know.
Ok it should work well perfectly with your game. If you have trouble figuring out how to implement it just ask and I can help.
1) Just set the blocks to invisible
2) then set a global variable called "Appear" make it equal zero.
3) Then set the power-up so that it makes appear equal 1.
4) Then set the system to compare variable equals = 1 , make blocks visible.